I'm assuming the parent meant that NAT, as implemented in SOHO routers, does not support SCTP. They could implement it, but don't, and thus, NAT breaks it.
> But because of the second point, why should someone implement it?
I'm reading this as "SCTP has ports, why should someone implement it?" There is way more to SCTP than ports. For example, SCPT can deliver data on multiple independent streams, something HTTP/2 in many ways reinvents.
