Similitudes in timbre. There is plenty of room for improving the state of the web. Not 100% certain IPV6 is that, but it certainly offers more address space, and that would be foolish to avoid embracing simply because old tech is duct-tape-able enough.

I am not trying to say IPv6 is bad (in fact I'm a fan), I am asking what benefits it offers specifically in the context of SSE.

I am not the one making a claim, I expected some arguments with it. "IPv4 is not web scale" is not good enough https://youtu.be/b2F-DItXtZs