Well he is not the first to start the tradition because I think it's like a ritual with the owners of the club now and the previous owner @Roman abramovich even did worse as he frequently sacked coaches on a steady although his wasn't fixated on squandering money on buying big names but he did have his fare share of the Chelsea syndrome.
But in Roman Abramovic's era Chelsea became a very successful club in the Premier League and if I'm not mistaken during his 19 year leadership era at Chelsea the club was able to win 21 trophies and was always a regular at winning the Premier League title. For me, comparing him with the current Chelsea leader is very different, obviously Abramovic is smarter in managing management and the team, I don't agree if Todd Boehly is compared to Abramovic, Todd Boehly always makes quick and rash decisions, he really encourages management to recruit young players but without aware that Chelsea not only needs the support of young players but also requires good adaptation between coaches and players so that Chelsea can be successful again as a top club. If Todd Boehly continues to decide to change coaches every season, I doubt Chelsea will ever regain its glory.