On this forum, in addition to buying / selling cryptocurrencies and buying various digital goods, there is also trade in physical goods, which are then delivered to you. And here the question arises: what to do with your personal data? On the forum, I still meet similar questions, even among old members who are faced with such deals for the first time.
I think the forum is just one of the potential privacy problems we face in our daily lives, and I think that this forum is by far one of the most privacy friendly websites around.
We are forced on daily basis to give our name, phone, address, documents, etc to buy most of the things we want. Every time you buy something online (from home appliances to travel tickets) we are asked for personal information. Soemtimes even to watch a video or download a PDF we are asked what is our email address or your phone number.
My suggestion is that, if you are really worried about your privacy, just rent a mailbox and get a pre paid phone card. You can just rent a mailbox near your house or your work and you can give that mail box address when requested. And use the pre paid phone card when requested, whcih are (at least in brazil) not linked to your ID.