That's a fairly good argument to ignore any name collision; "oh, it only affects people that are not me".

Given that the products are quite similar - both are virtual file systems after all - confusion is actually quite likely. If you're the kind of person who has reasons to speak about virtual filesystems at all (which, honestly, most people don't) you should probably know about both.

Had this been back in the day one would guess it was deliberate... but hey, everybody tells me Microsoft are supposed to be good guys these days, so I guess Hanlon's Razor applies.