In all honesty, I don't see that sort of thing posted except maybe the overly naive excited "omg I love rust" post in /r/rust from someone just learning it which no one should be taking as credible.

I do, however, see people trot out the oft-repeated "rust evangelists want to rewrite everything in rust" or "rust people say programming C++ is a crime against humanity", but it seems to me that's the only place I see this argument. In other words, it's a simple strawman.