I think many is afraid. It is unknown OS. No one likes change. Many thinks IT is hard. especially elder people. However:
There is to few places to even buy a computer with Linux on it.
No ads on TV or similar, nowhere to test, not a single .exe file to run and test it out
Works differently - need to relearn.
A kid does not have any problem with the above. This is why Steam Deck is selling. It is just fun to test something new with your friends and see what all the buttons do. Seen as cool. Any guess where this is going when they get adult?