I like the idea of “if it’s not broken, don’t fix it,” because often times I don’t feel updating at all because it will not change anything either way.
My old netbook is still on Anki 21 and that’s the only version that works ((Arch Linux) Illegal instruction (core dumped) in 24.04). But as long as FSRS (which I really like) is in, then I may use it for more than 5 years.
All of the versions of Anki are just small fixes for addons or bugs. If you actually need it, then you can update it from there (from there, GitHub)