I'm late to the party (it's been a busy few days), but I've followed this thread. A pretty good discussion for the most part. Here's my take on some of the (IMO) generalizations being thrown around about Vulfpeck. For background, I'm 55 and pretty well-versed in the sacred '70s funk "canon." (Cue the choir of angels.)
First off, they're not focused on trying to replicate the stanky/greasy/dirty/nasty/insertyouradjectivehere '70s hardcore funk sound (nor should they, IMO). That's been done as well as it's going to be. If Vulfpeck went that route, wouldn't TB just accuse them of being Greta Van Funk? And anyone who has listened to more than a couple Vulfpeck songs (not sure that many here have) would find a pretty wide range of styles--frenetic "funky" jams (I'm not interested in the funk/not funk debate, so quotation marks used), Jackson 5-style pop, soul ballads, rock-type raveups, slow grooves, goofy weirdness, etc. Don't put Vulf in a corner!
Not enough use of space/too many notes, you say? Pshaw! In a number of their songs, Joe lays back and provides fills as needed. This has become more true as the band has increasingly recorded songs with vocals. I'm not going to claim they're all funk by any means, but again Vulfpeck is arguably more versatile than their rep implies.
Live is where they really bring it, by the way. And some folks say there's no emotion or "realness" in their songs? Maybe they haven't heard this one. (Caution, there is a bass solo.

) The coda was added for the live version.
Another example is "Outro", which was posted a couple pages back. I could post many more examples, but I'm going to move on.
Quantized, too clean? Maybe in some respects. There's very little distortion used. They also very rarely cuss (never in their songs). I'm no prude, but I think it's kind of cool and contrarian that they do it that way. As for quantized, they record everything within just a few takes, and as much of it as possible is live/at the same time. Maybe it sounds uber-produced because they're so tight? They do make heavy use of compression, though.
The fanbase has been accused of being ignorant of classic funk, and I think it's also been claimed that new bands (Vulfpeck was implied, since it was in this thread) pretend they're the first to do this stuff. Honestly, I find this train of thought pretty laughable. Vulfpeck has recorded with and/or jammed live with Bootsy (an especially vocal supporter of the band), Bernard Purdie, Zigaboo Modeliste, James Gadson, and David T. Walker, among others. Now just because those funk legends dig Vulfpeck doesn't mean everyone has to like them or think they're "real funk" or whatever. But if you want to know what those folks think of Vulfpeck and whether Vulfpeck shows respect to the old-school guys, there you go.