For shits and giggles, I did vote in a couple of categories early on in the show. However, as far as the numbers go, it could be something similar to what I experienced. I started having app issues with it not loading in time for me to vote in categories anyway, so I gave up and didn't bother anymore since I knew it ultimately didn't matter. While I do believe those stats are sadly a decent portrayal of what the "fans" were most interested in, the numbers also could have dwindled down because of people having issues with the app, not being able to get to it to vote in time, or because of the number of viewers decreasing as it often does during the weekly 3-hour Raws, meaning with less viewers there'd likely be less voters during the later categories.
But, in a nutshell, yeah, sadly enough I could still see those numbers being a decent reflection of what "fans" are most interested in and concerned with. Ugh. No wonder the WWE product sucks so royally.