I've never seen any major browser (or some other method) censor/rewrite an individual page that's protected by SSL before.. as far as I know then it's not possible, which is why they've had to resort to banning the entire website (which in GitHub's case would be too costly).. If you know about previous incidents then please do share.
From today we know they are already able to do whatever they please (as long as they can get people to use their browser).. abuse other organizations reputation to spread lies and misinformation. If governments don't act then it won't be long until all these Huawei, Lenovo, OnePlus, Xiaomi, Oppo, Vivo, etc devices come with their browsers preinstalled (and likely default back to their browser to open links from other apps even if you tried to change the browser).
From today we know they are already able to do whatever they please (as long as they can get people to use their browser).. abuse other organizations reputation to spread lies and misinformation. If governments don't act then it won't be long until all these Huawei, Lenovo, OnePlus, Xiaomi, Oppo, Vivo, etc devices come with their browsers preinstalled (and likely default back to their browser to open links from other apps even if you tried to change the browser).