I guess the debate is so toxic because it's a perfect bikeshedding topic everyone that uses Linux can somehow participate in. Some sysadmins are surely frustrated because it breaks the way they worked in the past years, others are happy about the new features.
I'm undecided but if I read this https://news.ycombinator.com/item?id=11675129 I'm really feeling uncormfortable. Hitting this and debugging it seems like a nightmare. So I guess it's a win and eases a lot of pain points for ordinary users but make the live of specialists a lot harder. I can imagine how you hitting these bugs regularly turns you into posting something in the angry territory.
On the other hand the debate is now mostly technical (except some trolls).