…yes that’s how it works? You opt in and choose what you share. They’re quite explicit about it.
I would say it's a little more murky than that. My anecdotal experience is in the context of Ancestry.com. Effectively, I might not consent to having my information shared but if my uncle, nephew, etc. does it is effectively still being shared.
> You opt in and choose what you share
Until the company gets breached and your choices mean squat. Thanks, no.
Yes. You must opt in. When you opt in, you can elect to show your full name, or just initals (may be other options but I opted in long ago).