Honestly I could "retire" to a senior level role and have AI do 90% of my work and nobody would know the difference.
The benefits COULD hit by employers reducing everybody's hours.
The blocker to this is the middle management disease where there's a class of people who spend 40+ hours a week in some kind of update meeting or another and that much talking can't be replaced by AI. (much of it could be replaced by just not doing it any more but that's a different story)