That sounds like it is working as intended, not a false positive. A false positive would mean it blocked you whereas a challenge means more information is needed. You aren't noticing all of the times it correctly decides you are human, only the times when it needs to "inconvenience" you for more information because you prioritize privacy, a key similarity with some bots.

I also like privacy. I use GrapheneOS. I compartmentalize my credit cards, emails, and phone numbers. I don't use Google products, and the list continues, but I don't complain about Cloudflare because it is painless and I understand the price I pay for privacy.

I also have home services accessible via my home website, running on my home server(s). I chose to have cloudflare to host my domain specifically for the easy bot blocking, and it blocks more than 2000 bots/day that otherwise would be trying to find vulnerabilities on my servers, which contain a lot of sensitive things. I've never had an issue personally accessing my services through cloudflare. Sometimes I have to do captchas to access my own things, and that's barely an inconvenience (I am aware the domain isn't necessary to access services, but it makes more sense for my setup and intents)

>Their product giving false positives (unnecessary challenges for a normal browser humans commonly use) to real people is definitely their fault.

Is it TSA's "fault" that non-terrorists are subject to screening?