Things like "using Linux" or "having an adblocker at all" get you sent to captcha hell. Anything where you're in the minority of traffic. It's not going to change; why would it?
CAPTCHAs are barely sufficient against bots these days. I expect the first sites to start implementing Apple/Cloudflare's remote attestation as a CAPTCHA replacement any day now, and after that it's going to get harder and harder to use the web without Official(tm) Software(tm).
Using Linux isn't what's getting you blocked. I use Linux, and I'm not getting blocked. These blocks are the results of a whole range of data points, including things like IP addresses.
I have not tried less mainstream browsers, just FF and Chrome.
What usually works for me is to close the browser, reload, and try again.