Most of them jump out as immediately dodgy -- except Stylsh. That is the only one I've ever used on the list but it's been several years.
Readit Newsendsandmeans commented on Chrome extensions spying on users' browsing data qcontinuum.substack.com/p... · Posted by u/qcontinuum1
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When the state picks the winners everyone loses.
Run it into the ground!
Same argument can be applied to all closed source software.
In the end its about who you trust and who needs to be verified and that is relative, subjective, and contextual... always.
So unless you can read the source code and compile yourself on a system you built on an OS you also built from source on a machine built before server management backdoors were built into every server... you are putting your trust somewhere and you cannot really validate it beyond wider public percetptions.