I am not a game developer (I've made a few in the past but didn't use any frameworks besides direct libsdl calls), but if this article rings true for anyone in that field I'm a bit surprised things as basic as properties, structs and tuples are "not used" by unity devs, this is some basic stuff that has been supported even by Mono for decades. Just basic syntactic sugar though, so not a big deal either way. Just surprising to me at least.