No relation to vim. Yes, Vimmerse = V + immerse. V is for video or volumetric or virtual...

"Ah, finally a VR platform where decent people (and otherwise) can immerse themselves in vim..." I thought to myself while deep inside me I knew it was destined to be a short road to disappointment and heartbreak.

As a typical HN member, I too saw Vim first.

But that's a very biased population for sure!