As long as we're having a big bitch-fest here, I'll throw in my $.02. Other than expanding batteries, my laptops have generally been trouble-free. But the problem I do have is that the older my MBP, the slower it becomes when I upgrade the OS. When I upgraded my 2015 to Big Sur last year, it essentially became unusable because it ran so slowly. It now sits in my closet. Apple should stop nagging you to upgrade the OS…
I don't condone piracy but you can download the old installers(get creative) md5 checksum it and simply reinstall the old OS. I am still running a 2012 macbook pro for video editing with final cut pro.