Ayup! Somethin's better'n nothin'.
I don't see how, their frass is about the same size as many trichome heads. And then there's the mold associated in those areas.
Look man, it's your first grow, I get it, we've all been there. But if you leave that rotten stuff there, it's going to simply cause the rest of it to rot. So you either cut it away yourself and start applying iso or something to stop that rot, or you watch your buds rot before your eyes. It must be done.
But that's the thing. If you get on top of it, it's not an issue. If you
just start spraying, alternating treatments, with Bt and
Spinosad, you'll have a real handle on the problem.