Personally I’m frustrated with always having to give a working phone number to accounts.

I have no idea if I’ve been at all successful in poisoning my data but all my accounts use unique generated emails in addition to generated passwords and fake profile info. It’s just habit now.

However all too often the one piece of real data I have to give is my phone number, and that would be really useful to cross-link all my accounts for data brokers building a dossier on me.

I have hundreds of fake emails but can create at most a couple phone numbers