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We should have the option to limit an extension to certain tabs or websites or at least windows, and extension authors should also have the option to specify that.

An adblocker, by its nature, needs to access *. But Return YouTube Dislike could statically specify that it will only run on youtube.com, and that's fine.

But the option to enable access to * is essential.

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>An adblocker, by its nature, needs to access *

Well that's what is in contention. Does everything claiming to be an adblocker really need access to *? Is Adblocker5++ (totally not malware) entitled to as much access as uBlock Origin? You can declare upfront all the URLs you don't want accessed (which on top of security gives a substantial performance boost), and who's to say someone won't figure out a better way of working within these constraints?

What does "entitled" mean here?

A valid claim. The unfettered access to. etc.

What does that mean? The CPU runs instructions, it doesn't have entitlements or claims.

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