To be honest, since 2012 the club went on an erratic direction. I firmly believe that hiring Mourinho again in 2013 and Conte in 2016 was a costly decision. I mean, the club was slowly moving from physical squad + "marquee players" approach and started to invest in promising + skilled players. Back in the day it seemed the club was building a squad for Guardiola, then, when he decided that Bayern was a better destination, the club hired the anti-Guardiola. I mean, at some point mourinho had Juan Mata, KDB, Lukaku and Salah on his squad. One season later, all of them were gone. Then, we bought Costa and Fabregas, and even though we won the PL for the first time in 5 years, those decisions showed a club that was lacking any kind of long term strategy or a clear path.
When Mourinho was sacked, we were interest in different managers with different football philosophies. For example, the Sampaoli was interviewed and at some point he was considered the number 1 option, but due to his poor english, the club appointed Conte. I mean, again the club was lacking any kind of clear path.
Conte won the PL in his first year, but after the whole Costa saga it was clear he tenure would be short, and it was also clear there was something wrong inside the club. Conte decided by himself to "fire" Costa from the team, without consulting the club hierarchy, and this happened because there was no synergy between the manager and the board. Instead of firing Conte asap, the club decided to give him a full season despited of a relationship that was broken beyond repair. Conte spent the whole season moaning and complaining in his conferences. Just like Mourinho, Conte barely used any player from academy and most of young and "promising" player that were bought during those years spent years on loan somewhere else and never had any chance of proving their value inside the club.
After Conte, there was Sarri. The only problem was: a manager like Sarri came in 5 years too late. When Sarri decided to move back to Italy, the club came up with the baffling decision to appoint Frank Lampard as the head coach. To be honest, I do believe that hiring Lampard in 2018 was even worse than hiring Graham Potter. Lampard is one of the worst managers in PL history. Then, we appointed Tuchel, another "short term results" kind of appointment.
Boehly doesn't have a clue about football, so there is no doubt that most of his decisions are based on the advice of people inside the club. I would say that most of his decisions this season are decisions that you could easily see the club making under the previous ownership in recent years. This season is actually pretty similar to what happened in 2015/2016 season, and I would say that season was even worse because in the beginning of it everyone was picking us to easily win the PL again.
Yeah, Boehly took it to another new level, but lets not pretend the club was in a great shape before. After 2012, something went wrong along the way and City left us behind. Boehly mistakes are basically hiring a terrible manager + paying big money for average players, not really different from that the club have been doing in past 10 years. After Potter fiasco, its clear the club will name a head coach with previous experience in a big club, exactly the same pattern we saw in past 12 or 15 years: club hires a "promising" manager without previous experience in a big club - "promising" manager is a fiasco and is fired - club appoint an interim - club hires a manager with previous experience in a big club.
I would say the biggest difference right now is that before we used to get 2 or 3 expensive average players per season, while Boehly got something like 20 of them in a single season.