As a public disclosure. I run @torqewrench1969 and @bot-or-not .
As for the captcha and 2fa filtering systems, I am not against the philosophically.
I do see practical issues affecting theusage of captcha and 2fa.
Users have a fixed amount of time per day, and for them to spend the time to solve a captcha or a 2fa problem, it would have to be very important to need to post or vote. If a completely "bot-free" environment is needed, it had better be very important, just due to the time it would be needed for the users to verify they are not a bot.
Secondly, capture and 2fa will only filter out bots for so long. The technology and programming will always improve, so the use of captcha and 2fa are only bandaids on the proported "problem".
Thirdly, is the expense implementing captcha and 2fa aren't free. Someone will have to pay for it. If they can get it at the proper price point, it might be feasible to implement them in some instances.
RE: The Difference Between Promotion and Curation, and Killing All Bots