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Not necessarily. Even the founders of Mozilla Firefox recommend installing an adblocker for the Firefox browser.

What I think is really important is to avoid Big Tech as much as possible.

I think extensions for Google Chrome can sometimes access information in your browser that it shouldn't.

At least that is what I heard 👍

Google Chrome extensions can always access information in the browser whenever they want to (and send them anywhere they want), not to mention Google Chrome itself.