Based on the response header having cf_bm, it seems to be cloudflare bot protection.
"Cloudflare Bot Management uses machine learning, behavioral analysis, and fingerprinting to accurately classify bots."
https://www.cloudflare.com/en-ca/app...ot-management/
Cloudflare makes a lot of money from the services they provide so they have developers working on protection that is unique and probably regularly updated. This might be a lot of work for an open source project to work around
