There is no way around this while continuing to use Tor, unfortunately. Either you pay the fee, or you continually pick new exit nodes and register a new account from each until you find one which is relative new and therefore does not have an evil fee yet.
Since you are already an established member, I don't think it would be unreasonable to ask for your alt account to be manually whitelisted without paying the evil fee.
This thread is not about my alts, I can always create a new alt without TOR as I did it
before, The idea is that the forum is advising that if people are concern for their privacy they have to use TOR but as I said you have to pay for this, so it can be added that additional fees may apply during registration.
Imagine you register an account trough TOR with all that captcha solving for 5-10 min and then suddenly you have to pay. If you don't have/own bitcoin and you don't know how to pay then you probably be disappointed and will never come back.