I've read about Anubis, cool project! Unfortunately, as pointed out in the comments, requires your site's visitors to have Javascript™ enabled. This is totally fine for sites that require Javascript™ anyway to enhance the user experience, but not so great for static sites and such that require no JS at all.
I built my own solution that effectively blocks these "Bad Bots" at the network level. I effectively block the entirety of several large "Big Tech / Big LLM" networks entirely at the ASN (BGP) by utilizing MaxMind's database and a custom WAF and Reverse Proxy I put together.
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