Well, considering this band's history with their singers, I think a more accurate statement would be Dave is Van Halen Right Now, (Pun most definitely intended)
Also, Sammy's not the only VH lead singer to try and worm his way back in. I seem to recall a few years back, David Lee Roth, after recording a couple of tracks, began prepping 'for the tour', that only he, apparently, knew about.
I'm not trying to be a tool, and I'm not saying anyone is right or wrong. I'm just saying that neither of these singers, or the VH boys for that matter, have acted much like adults from time to time.
Granted, Dave's been with the band longer, (not sure how many years difference), and he's done more albums with VH.
But that doesn't change the fact that Sammy was a big part of their success for a long time, too. Again, I don't know how many years, but I know they did 5 albums together, and they're not garbage. They're well done albums, too. It's an integral and undeniable chunk of VH history.
If Sammy's a worm, then so is Dave. He's pulled the same childish stunts.