By blow away, I assume you mean they're much faster which is true.
The overall build quality is complete crap. They feel like garbage to the touch, there's so many design and build flaws that you're lucky to get 3 years out of one. Compared to my 2011 which is still going. I guess that's on purpose though, a computer in use after 12 years means lost money for Apple (even if it is good for the environment).
You're forced onto the newer OSes. The current state of MacOS is horrendous, aside from all the well-discussed bugs here, they UI is clunky, it's a broken-down version of the UI designed for iPads with their touch screens and it just doesn't work on a computer.
Timmy took out an ad campaign to brag that he doesn't even know what a computer is. He famously said he doesn't even know why anyone would buy a computer. Mac has clearly been led for the past 7-8 years by someone who doesn't know what a computer is for or why anyone would buy one.
They may be the fastest macs ever made but the design and usability is utter garbage and has been since before Apple Silicon came along.