Hey there, author here! I got the M1 around the 15th March of 2021 from work, at this time, Docker and some other apps weren’t fully supported yet but tech previews were letting a favorable view of the whole thing. I am pretty lucky since Docker isn’t really essential in my work and is just a nice bonus that saves time when doing local tests. Even tho some little things were frustrating at first (some applications not supported), a little patience never killed anyone :) In the end, even with that, I would say that the experience was pretty much painless given I only had few programs not running either natively or M1, most of which being games.