Depends what you mean by relevant. If all of knowledge work gets automated away and the labor has to flow elsewhere, it's probably easier to upskill into plumbing than it is to upskill into medical field, at a minimum because the medical field loves to create artifical scarcity and refuses to admit more people to school despite constant high demand.

So, I think both medical and plumbing feel "safer" than design or programming, but plumbing feels more prone to being saturated quickly if KW labor needs to reskill