Sam isn't actually a dinosaur - a common misconception. He's a utilitarian like Jose Mourinho. Allardyce has been on the frontline for almost every major scientific or technological development in Premier League football, including new introducing dietitians and food science into the pro game, he was the first in England to use opticians and attempt to improve situational awareness through computer modelling, he introduced moneyball/sabermetrics approaches ten years before everybody else and even had Bill James come in to help form his first performance analysis/statistics team.
Allardyce plays the style of football that best suits the goals of each club he is at. Most of the time that's very direct in an attempt to compensate for lack of budget but not ALL the time. He's played some good football when he's had the chance to start building things past that point, but in the modern game he's the man who goes in and stabilises then gets turfed out when the real project begins.
Him as England manager was a great appointment. It was his dream job which he'd been talking about for 30 years - England finally had a manager who had been preparing for the role. In addition his belief in scientific methods and how they can help shape football would help move the FA into the 21st century. He's produced numerous other coaches who have worked under him to have great careers in the game which would be important when looking at coaching development frameworks. In addition to this, he'd finally have a stock of good players where he could replicate a penetration based style of football that would give England a new identity - his style would be more Alex Ferguson than Pep Guardiola but it would at least lay some sort of foundation to be building upon. Ferguson's teams, and Allardyce's when he got going, where possession based but also much more penetrative than a Guardiola team. They want to play through the lines and cause defensive confusion rather than playing in front of the lines and hoping to create space. He's always used a decent pressing system, which is one of the reasons his teams are so defensively secure with little talent - they're organised.
The England manager role isn't just a first team coach as many presume. He's part of a wider ranging team that looks at the state of the English game and attempts to improve it. Having Allardyce work in St Georges Park would have created a atmosphere of innovation and one of the most experienced football men in the country at the head of it. He really was the perfect choice in so many regards. But the media being the media set him up and he was out.
Then we got Gareth Southgate who played 4 CBs in the same team, no ball playing midfielders and was shocked that we couldn't keep possession. He wanted to build a team that was a brick wall with pace on the flanks in order to cross but he had hundreds of mistakes in his thinking. The biggest and most alarming one is that he thought that any defenders who can pass can therefore play in midfield which is a MASSIVE misconception about what the job of a midfielder in the modern game actually is and how little it has to do with just keeping the ball. He didn't play Stones there thank God but it's still stupid logic. There's a reason Dier plays CB for Spurs and Wanyama now plays in midfield and it's to do with a bunch of reasons regarding spatial reasoning, forming shapes and escaping pressing traps rather than because he can pass a ball well.
Southgate isn't even a dinosaur because dinosaurs were once alive and good at things. He's a failed dinosaur. A man who wanted to be a 300 million year old creature and tries to copy them but still fails at this. The sooner he's gone the better for all concerned. He's going to waste yet another generation because he has no plan, he's tactically inept and he doesn't seem to understand the foundations of modern football. Even more than this, before he became England manager and was just a coach in the national organisation who used to do training of other coaches, grassroot amateurs would walk away from his lessons shaking their head and trying to work out why this man was heavily favoured by the FA. He was teaching kids kick and rush football and trying to impart on coaches the importance of winning and individuality which again is 19th century thinking about player development. It was all 1v1, beat your man, win your battles, etc. There was almost no age appropriate training on spatial frameworks, systemic movements or pressing techniques. He wasn't even teaching kids "scanning" (i.e. literally turning their head around to survey the pitch constantly).
If Southgate has his best possible season in football ever as England manager he will one day perhaps reach the heady heights of being a fraud. Now he's not even a fraud. He's a man who has to achieve things to become a fraud.