An app that I demand using requires Intel not ARM. Its most recent version is Windows only because the port to ARM was not cost effective for the market share. I am not yet up to date on how well x86 emulation works thru macOS on M-chips, let alone through Windows emulation (i.e. Parallels) on M-chips.
Also, being retired means spending more time with a cool drink in the comfortable outside deck with a 16" portable screen than sitting tight in an attic desktop chair, even when the latter setup has an external 4k screen, ergonomic keyboard, and trackball.
Anyway, you are spot on with the envy on what I hear about speed. My biggest temptation is to skip the fretting over adding a mini or studio to my portfolio and just get a top of the line M4/5 MBP again (as I did when I bought the i9 MBP some many years ago). Exploring the options with my “must have” app remains the last hurdle in making this decision.
I have a good bit of dedicated history with it over 3+ decades of use. A browsing of the Projects list will reveal stuff that I developed dated back to before 2000, primarily for my needs in science/engineering research and teaching. I dabble with project development now mostly as a hobby.