Some of the articles point have nothing to do with the age of TCP, some do, if I copy just two points: 1) TCP makes applications build their own messaging proto

Some of the articles point have nothing to do with the age of TCP, some do, if I copy just two points: 1) TCP makes applications build their own messaging protocols on top 2) The three-way handshake (and connection shutdown) is slow and wasteful for short connection (1) is a big issue but has nothing to do with the age of TCP whereas (2) is related to TCP's age: using big SYN cookies with the underpowered hardware of the time..