I had somebody tell me they like to see if anybody had any gaps in their employment. But this is probably a false indicator either way and not worth the problem of encouraging Ageism bias.
I chose not to work because I had saved enough money to live inexpensively, sleep in, exercise, read books, and do whatever I wanted without having to answer to anyone.
Employers who are interested in this and "get it" are the ones I want to work for.
People usually drop these out of their resume because they don't want to talk about it, but it's a very positive part of their character sometimes.
It might be better to ask them about it though, because they likely won't put it on LinkedIn either.