That's one way to look at it. Another way is if it takes a couple CPUs to run my application, a CPU or two to drive the storage, and a CPU to do TLS, why would

That's one way to look at it. Another way is if it takes a couple CPUs to run my application, a CPU or two to drive the storage, and a CPU to do TLS, why would I also spend a CPU on TCP if my network card already has one that does that? That's a little bit like what programmers are talking about when they are talking about "multi-core programming", except those are general-purpose "cores", and (presumably) these "cores" can only handle doing TCP.