How many people do you think are browsing with a weird enough config (eg. custom browser like OP, or some weird config like firefox with fingerprinting protection on a raspeberry pi) to trip cloudflare's protection?
We had all of our Devs Pixels get blocked, and after talking to CF, it was because Internet archive was rebooted their scraping farm, all the devices stampeded and overwhelmed the known bot safeguards, and those tags were added across the board. CF gives sites the tools to tune what is getting blocked, we bumped the sensitivity down to 25 and haven't had many complaints (despite having a very vocal community)
The most common complaint is users' IP address getting blocked because of compromised devices
And no, it wasn't due to a country-based block selected by site operator.
In my experience what really makes it loop every single time though is JShelter. CF doesn't like having your fingerprintable data bits messed with.
There are legitimate uses for non-instrusive, ethical and legal scraping, but some of us have had to resort to extreme measures:
[1] - https://blawg.nochan.net/b/Internet-Crap/20260522-Maybe-AI-B...
At least let me complete a "prove you are human" challenge or something, but don't outright ban my IP address?
It takes very little for CF to consider you "weird".