Why not charge Tor and VPN users a small bitcoin fee to log in? Most of those users would probably rather pay a fee than use cloudflare. They already have to pay a fee to register.
Paying a small fee to register and paying a fee every time you want to log in are two very different things (not to mention the latter being ridiculous and not sure why we should punish all legitimate tor users).
Thank you. As a Tor user, I admire this forums high-level culture of respect for privacy.