It's like research. People had encyclopedias. If they wanted to know real, deep information about subjects they'd have to specifically spend effort seeking and finding books or papers about that specific subject (which are typically just distilled papers in a far wider range and number than an encyclopedia would be)
Then we could just go Google it, and/or skim the Wikipedia page. If you wanted more details you could follow references - which just made it easier to do the first point.
Now skills themselves will be subject to the same generalizing phenomenon as finding information.
We have not seen information-finding become better as technology has advanced. More people are able to become barely-capable regarding many topic, and this has caused a lot of fragmentation, and a general lowering of general knowledge with regard to information.
The overall degradation that happened with politics and public information will now be generalized to anything that AI can be applied to.
You race your MG? Hey my exoskeleton has a circuit racer blob we should go this weekend. You like to paint? I got this Bougereau app I'll paint some stuff for you. You're a physicist? The font for chalk writing just released so maybe we can work on the grand unified theory sometime, you say you part and I can query the LLM and correct your mistakes