That doesn't really help if the same Huawei bot keeps re-requesting a bunch of 600 KiB JPEG from 120 rotating IP addresses with random crap at the end of the URL, like what happened to one of my servers. Efficiency doesn't really matter if you're getting hammered by bots.
I ended up aggressively IP blocking all of China, Singapore, and a few other East-Asian countries once I noticed that blocking server IP addresses just made the botnet switch to residential IPs. I didn't switch over to Cloudflare, but now a couple billion people can't read my website, which is arguably worse (but cheaper).
Also, a handful of people seeing an annoying checkbox is hardly a reason to re-architect an entire website. I am as opposed to Cloudflare taking over the internet as any sane person, but the usability story isn't really an argument for that kind of time investment.
The alternative to Cloudflare isn't some magical system that works for everyone but bots, it's hard-blocking IP ranges on the network level for anyone who doesn't fit the "normal" user profile.
Anubis is trivially bypassed by anyone that cares to bypass it. All it does is inconvenience real users with niche/older/extended browsers or those who take basic precautions against tracking and malware.
Anubis won't work now that scrapers just allocate more CPU time to beat Anubis challenges. The default configuration also permits all bots, only catching bots pretending to be browsers.
I ended up aggressively IP blocking all of China, Singapore, and a few other East-Asian countries once I noticed that blocking server IP addresses just made the botnet switch to residential IPs. I didn't switch over to Cloudflare, but now a couple billion people can't read my website, which is arguably worse (but cheaper).
Also, a handful of people seeing an annoying checkbox is hardly a reason to re-architect an entire website. I am as opposed to Cloudflare taking over the internet as any sane person, but the usability story isn't really an argument for that kind of time investment.
The alternative to Cloudflare isn't some magical system that works for everyone but bots, it's hard-blocking IP ranges on the network level for anyone who doesn't fit the "normal" user profile.