And again here below my follow-up comment. Yesterday (~10 hours ago) I was logged in on the Win 11 side of my dual-boot laptop. I posted a question there and answered the anti-spam Q. Then I revised my question and was surprised that the question did not reappear.
Now I'm logged into this website in Linux. Same location, different OS. I also need to use another team laptop at times, to enter supporting files for questions, etc, on the machine that has the current problem. We also move a lot, and use a VPN, etc. Makes verification difficult, I guess.
Would it be possible to verify someone as a frequent user, but if something looks abnormal send an email or text msg asking the user to confirm? Or ask the anti-spam for a verified user+unverified location first submission, then hold the answer for that day or whatever length of time seems good?