Wikipedia actually has an article about it. They are mainly bothered by the unreadability of it. Editors can indeed bundle citations as you suggest, but it takes some manual effort.

Citation overkill is also a bit of a red flag for edit wars, or barely-notable things that someone really wants to have on a wiki page.

Moissanite is chemically different to diamond (SiC vs C), has a different crystal structure, and is less hard. You can also get actual lab-grown diamond, but they are quite expensive. But you probabaly won’t be able to tell the difference anyway.

I mean, yeah, basically. It’s really not very complicated.

German also does this. I think a good 20% of all verbs are just variations of “ziehen” (to pull).