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Fine, but that's not the point...
Those "general purpose" apps block ads and more. I never blocked ads; I don't mind since if I don't click them, they don't get my money.
Miners on the other hand...

then you have much more to fear than a simple miner.

It's not about fear... it's about lack of transparency.

The issue here is that we are talking about a witness. As such transparency and critical thinking matter.

without a doubt a scandal, but doesn't mean you should use questionable extensions. they weaken your security