Apparently, Google just changed their Web Store policy to forbid misleading marketing. Let's report this then...
And reported to Mozilla as well: https://bugzilla.mozilla.org/show_bug.cgi?id=1557258
There we go, Mozilla blocklisted all of them: https://blocked.cdn.mozilla.net/67ab85b2-4241-4f2a-8589-801b4221b79d.html
Looking more into this, I'm confused. Either I am missing something or Mozilla's Andreas Wagner jumped the shark claiming remote code execution here. These extensions certainly have a bunch of security issues, but code execution cannot be triggered by extension developers.