All these JS-heavy "anti bot" measures do is further entrench the browser monopoly, making it much harder for the minority of independents, while those who pay big $$$ can still bypass them. Instead I recommend a simple HTML form that asks questions with answers that LLMs cannot yet figure out or get consistently wrong. The more related to the site's content the questions are, the better; I remember some electronics forums would have similar "skill-testing" questions on their registration forms, and while some of them may be LLM'able now, I suspect many of them are still really CAPTCHAs that only humans can solve.

IMHO the fact that this shows up at a time when the Ladybird browser is just starting to become a serious contender is suspicious.