Unfortunately it would be trivial to block an SSH tunnel like this. I recall reading news 10 years ago (maybe even earlier) some foreign journalist tried this at a Beijing hotel room and got shut down in minutes. That was when people are still using PPTP and L2TP protocols to get around censorship, Wireguard and shadowsocks wouldn't be born for another couple years.
In case anyone doesn't know yet, there is a iOS testflight app available. For me the haptics that is not present in the webapp made it so much more enjoyable to use.