Maybe you can use the 'Captcha bypass code' feature (
https://bitcointalk.org/captcha_code.php) when logging in to Bitcointalk again.
I also tried using the Tor Browser to post on Bitcointalk, which is relatively smooth.
Logging in is not the issue that Royse777 is talking about. That is using reCaptcha, for which there is already a workaround but this one that OP is referring to specifically is when you try to open any page on the forum, but you can't because you see a Cloudflare screen that never goes away, even if you complete the captcha 10 different times.
The Cloudflare blocks are IP-based. Doesn't stop them from banning all tor exit nodes though.