It'd be quite hard to pinpoint your place of abode if you live in a mildly dense area, and you can always avoid doing noticeably more frequent/dense/intricate mapping centered around your house
As I said you can also delay the upload of changesets until you're back from vacation if it's only for a few days/weeks (as well as using different accounts for when you're away)
I also think someone analysing OSM changesets like that would be more trouble than it's worth and there's lower hanging fruit out there
Definitely! Privacy is a human right