You don't have to give the FCC your home address. You only have to give them an address that you can receive mail at. This can be a P.O. box, a relatives house, your local ham club, etc
It still connects your online identity with a physical address associated with you in some way. That's a lot more info than an email address alone ought to supply.
When using ham radio, you must transmit your callsign and therefore show your identity. Also all ham communication must be unencrypted. There's really no way to conceal your identity and operate legally. If this isn't for you, then don't participate. Having an email tied to your callsign is just for ease of communication. Someone can send an email to my callsign@winlink.org and it will be relayed to me over a ham radio mesh network to my receiver. Totally open but I just wouldn't use it for anything I wouldn't want someone else to see.
Just like with social media networks, one may have multiple accounts with different rings of contacts. One ring might be people they know in real life and another might only be online "friends" they don't really trust with knowing their real identity.
If you use your own domain you'd also have that same kind of connection in the whois records. You can of course bypass that by using other information in there but it will be the equivalent of using a PO box.
Understood, but you have to think of this before you register your callsign because they publish the history of addresses that have been used. So it's too late for someone like me, who has already used his home address. The PO box would be the most private, at whatever cost that is. I would definitely not want to use my work address (which is what many people recommend), because anyone receiving an email from me would know my name and employer.
You don't have to give the FCC your home address. You only have to give them an address that you can receive mail at. This can be a P.O. box, a relatives house, your local ham club, etc