In general, yes. However, in this case--no, that's not helpful advice--because this program doesn't actually receive input from clients! Kind of hard to trigger exploitable behavior on a program that only sends output.

It wouldn't suprise me to find there were still possible exploits

While everything is possible, most exploits happen on buffer overflows on user-received custom data. and since this is not allocating any buffer to receive anything (besides internal connection structures that are filled by the OS), the attack/exploit surface on this one is really tiny, if existent at all.

We're a long way from "Smashing the Stack", people are aware of mitigation and the care that needs to be taken, precautions have been made inside operating systems and compilers.