Age discrimination, saturated market, no longer a team fit (everybody is using AI and they have metrics to backup performance gains), etc.

Can't someone who doesn't use it just..start using it?

Sure it can become a hobby.

Are you implying that someone starting to use AI now has already been left so far behind by experienced users that they would never catch up? That seems ridiculous - it seems to be getting better understood with time, which should make catching up increasingly easier.

No I mean trying to start in a few years. Basically if you feel ai is a fad and are trying to wait things out.