www.9gag.comopen 9gag in... prompt.The Firefox icon should be displayed.
Google Chrome icon is displayed instead of Firefox when continue viewing in browser on 9GAG

It looks like the issue for Reddit was fixed https://github.com/mozilla-mobile/fenix/issues/4227.
i don't think fenix sets its user agent to chrome on 9gag. the same issue on reddit was fixed by reddit. pretty sure 9gag has to fix this. these banners are evil though. (cancerous isn't the right word)
Most helpful comment
i don't think fenix sets its user agent to chrome on 9gag. the same issue on reddit was fixed by reddit. pretty sure 9gag has to fix this. these banners are evil though. (cancerous isn't the right word)