Is there any evidence or hints that these actually work? It seems pretty reasonable that any scraper would already have mitigations for things like this as a function of just being on the internet.
It might work against people just use their Mini Mac with OpenClaw to summarize news every morning, but it certainly won't work against Google. More centralized web ftw.
My current problem is OpenAI, that scans massively ignoring every limit, 426, 444 and whatever you throw at them, and botnets from East Asia, using one IP per scrap, but thousands of IPs.