The article is focused on general ossification of TCP preventing newer improvements from functioning. E.g. "performance enhancing proxies" from the article is n

The article is focused on general ossification of TCP preventing newer improvements from functioning. E.g. "performance enhancing proxies" from the article is not a euphemism for censorship, it's boxes design to do one thing with TCP which ends up breaking something for MPTCP. Any bypassing of censorship by avoiding ossification is completely incidental (and likely some extremely bad censorship if it just allows any protocol it can't filter through).