Disagree, the game is totally unrecognizable to that of the 1968/69 season, there a select few clubs who essentially share the pots between themselves now, unlike then when it was genuinely much more competitive.
I grant your point on the transition/announcement of Pep hindering Pellegrini, that is fair, but my point remains that from his first season in 13/14 the team steadily declined. Yaya Toure was walking around nearly a stone overweight for most of that last season and was selected weekly regardless, that's poor/weak management in my book. Not to mention us being tactically one dimensional, we lost 10 times in the league that season, the most since Hughes first season under the current owner.
He did do well in the CL in his last season fair enough, but as the club has stated publicly on record many times, our intention every year is to compete to win the biggest prizes across all competitions. Our managers have been backed with the necessary resources and infrastructure by the owners to achieve this since they arrived, so when we end up with a League Cup after your last 2 seasons at the helm, & stumbling into the CL places on the final day we have a right to criticize. I'd be disappointed with the same outcome after Pep left if his successor was equally as supported as him/MP & delivered those final 2 seasons. For example, we finished 2nd in 14/15 behind Chelsea but were miles off the pace, eliminated in the LC by Newcastle @ home & the FA Cup by Championship Middlesbrough, also at home.