I have been on this trend of reading those long legal privacy & policy documents that are buried in the website/app “check here to agree to our terms and continue using our product” and I am truly appalled about what most companies put in there; A huge majority, if not all, are using Google to collect data. Does anyone use the Google Analytics Opt Out browser extension (https://support.google.com/analytics/answer/181881?hl=en-GB)? I find it insane that there are no checks and balances. Google follows you around and then says that the only way to get them to stop is by permanently installing a product MADE BY THE SAME COMPANY onto your device.
I already try to adjust the cookie settings on individual websites. Is there another way to prevent or at least eliminate data siphoning? Do you trust the browser extension to do what it says it does?