Comment by Sebb767

> It should be something that an engineer needs to be forced to set while creating a socket, instead of letting the OS choose a default.

If the intention is mostly to fix applications with bad `write`-behavior, this would make setting TCP_DELAY a pretty exotic option - you would need a software engineer to be both smart enough to know to set this option, but not smart enough to distribute their write-calls well and/or not go for writing their own (probably better fitted) application-specific version of Nagles.