the fact that he's a replacement-level B10 big
I can see your point, but I don't agree with this. For me, there are clearly 3 guys above the rest. But, after that, I would not trade Matt for Nebraska's Walker, and he is a decent player. Same for WI's Crawl. There are several young bigs that have a higher ceiling than Matt. We just saw two of them yesterday in the MD/OSU game. But, right now, I'd rather have Matt.
He is what he is, he gives you what he gives you. While it will be maddening to see him not being able to finish the most basic short range bunnies, he is very good with other things.
The issue is how you use your players. Yesterday, CC felt he needed to match smaller with smaller for some reason. And bizarrely not by doing away with a 5, but just sitting down Matt. Verhoevan has, IMO, one advantage over Matt, he finishes marginally better around the rim (except if it's a dunk). Everything else is, in my mind, in Matt's favor.
Again, don't think we'd win with Matt out there. And Verhoeven played decently. But who knows, a couple of offensive rebounds by Matt and he could be a hero.
And again, basketball does not work by take Verhoeven out, put Matt in, and as Matt was playing poorly and Verhoeven was playing decently, we were better off with Verhoeven.