But national teams employing foreign managers isn't out of the ordinary. It's been regular practise at World Cups for almost 100 years.
Argentina had a Mexican in charge at the 1934 World Cup, Italy had a Hungarian manager in 1954, Mexico have had Colombian and Argentinian managers at the last two tournaments, France had an English manager in 1934, Spain have had a French-Argentinian manager (1962).
On top of that, Belgium have had Roberto Martinez at the last two tournaments, Switzerland have had more foreign managers than Swiss managers at World Cups, and Klinsmann was in charge of the USA recently. England aren't alone in this.
The England women's team just won the 2022 Euros with a Dutch manager, Sarina Wiegman.
And, I have to ask, where do you draw the line? We've had players with no English ancestry who weren't born in this country playing for us in recent years (Raheem Sterling to name one). Tuchel has lived and worked in the UK for a time that was considerable enough for him to have roots and connections here.
And yes, as much as international football is about "Our best vs Your best", international football is also a reflection of the game played in each respective country. To that end, the English game is the most popular in the world because we welcome the world to our shores. International talent has enhanced our game for 30 years.
You've also got to consider that, yes, while football is about the XI players on the pitch, it's also about the organisation and structure behind the team. The FA, upper management, etc. Would winning a World Cup with Tuchel not be an example of fine English decision-making?