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You get one mailing address that is verifiably yours.

You get one phone number that is verifiably yours.

I can whip out my phone right now and create 1000 of fake me.

I know what you did there, but - no joy.

You can have multiple mailing addresses and phone numbers. It's not even uncommon. Plenty of people still have a home phone number and a cell phone.

As for fake profiles, see my original post re: the "single consistent problem with social media".