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
Whoever is running this campaign noticed their extensions being blocklisted, the site will no longer redirect Firefox users - it looks like an actual quiz then. Chrome users are still being redirected to the site tricking them into installing extensions.
And now the campaign seems to be down for all browsers, no more redirecting. I guess that they try to avoid their Chrome extensions being taken down as well.