The problem here isn't so much that there's a discussion about semantics at all, IMHO, it's that some people *only* argue about semantics, and think that's all there is to philosophy.
A now-pretty-much-extinct group of philosophers in the UK tried this approach in the 60s/70s, and failed to accomplish anything whatsoever.
(Oh, and I'm back again. Just figured that out my router has been blocking this site for weeks now...
)