I don't know if you're being deliberately obtuse or argumentative.

It's not about transitioning between skillsets now, it's about future proofing.

I went from doing corporate enterprise applications on Windows NT to embedded systems when the PocketPC came out. Mobile computers didn't exist when I interviewed but because I was a generalist they had confidence that I could pick up the manuals and figure it out.

Note - I didn't work for FAANG because F and N didn't exist and A was a bookstore and G was a search engine :)