This can be problem for Firefox and Chromium based Browsers, too. If the Website decides that Manifest v3 is mandatory to visit their site, they can block any access from Browsers with v2 running in the background easier than before.
Luckily the first link is for a deprecated property that returns a hard coded list for compatability reasons, and the other two are extension apis that random websites can’t access.
This can be problem for Firefox and Chromium based Browsers, too. If the Website decides that Manifest v3 is mandatory to visit their site, they can block any access from Browsers with v2 running in the background easier than before.
Websites don’t get to see what addons are you running
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/plugins
https://developer.chrome.com/docs/extensions/reference/api/management#method-getAll
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/management/getAll
Luckily the first link is for a deprecated property that returns a hard coded list for compatability reasons, and the other two are extension apis that random websites can’t access.
Besides, with uBO (or a custom addon or userscript) you can replace the value of that list, for all sites or selectively