I spent an embarrassing amount on a lackluster early 2019 MBP. It's fine as a general purpose laptop but is just a little too slow for serious dev work, a little too heavy as the main travel laptop, battery life a little too short for my liking. I got an M1 for my work laptop maybe 4 months ago and it might honestly be the best laptop I've ever used.
In a somewhat similar situation with the 2019 16 inch Intel MBP. I wouldn't say it's too slow, but it does get embarrassingly hot during regular use. Enabling low power mode disables turbo boost and keeps it much, much cooler, but plugging into an external monitor enables the discrete graphics card and the laptop gets hot again. Going to try to get a few more years out of it hopefully until Imagination Tech's hardwar…
The biggest frustration for me with a mac now is that it's becoming a toy OS like windows. It becomes more and more cumbersome to run programs that aren't in the app store. As a result I've been cultivating an ubuntu/plasma(kde) practice on a gaming desktop outside of working hours.