I mean, every company I participated in just give a menu of 20 or 40 mutual funds, targeting different maturation points or Industries, and people absolutely are allowed to pick which funds they want their 401K allocated into. It's just going to require an additional 10 minutes of searching to find out how much AI diaper load is riding in your preferred funds, and possibly having to forgo growth funds and total index funds for some number of seasons.

Personally, I just moved to roughly 40% in Int'l funds despite ASML and TSMC being featured prominently, because it is still a net reduction in exposure and because I need the diversification (~10% a S&P 500' value is directly exposed either AI or semiconductor, and roughly 33% of S&P 500 is straight Tech of some flavor).