Tunneling over TCP has problems. (The article you linked mentions this as well.)
This TCP meltdown problem is especially prominent in public WiFi networks where they often like to dramatically limit the bandwidth to the clients that connect to their network. So UDP tunneling will work much better there.
That’s why I am excited about maybe finally having tunneling over UDP be a reality on public networks in coffee shops and libraries in the future thanks to HTTP/3 and QUIC where historically the mentioned kinds of networks have often been blocking basically all UDP traffic except DNS.
This TCP meltdown problem is especially prominent in public WiFi networks where they often like to dramatically limit the bandwidth to the clients that connect to their network. So UDP tunneling will work much better there.
That’s why I am excited about maybe finally having tunneling over UDP be a reality on public networks in coffee shops and libraries in the future thanks to HTTP/3 and QUIC where historically the mentioned kinds of networks have often been blocking basically all UDP traffic except DNS.