But one of the common distinctions between senior and junior developers -- almost a litmus test by now -- is their attitude to new, shiny tools. The juniors are all over them. The seniors tend to value demonstrable results and as such they tend to prefer tried and tested workhorses to new shiny things with unproven potential.
That means if and when the AI code generators actually start producing professional standard code reliably, I expect most senior developers will be on board. But except for relatively simple and common scenarios ("Build the scaffolding for a user interface and database for this trivial CRUD application that's been done 74,000 times before!") we don't seem to be anywhere near that level of competence yet. It's not irrational for seniors to be risk averse when someone claims to have a silver bullet but both the senior's own experience and increasing amounts of more formal study are suggesting that Brooks remains undefeated.