I lurk the Gentoo IRC & mail (15+ years). I've never seen any systemd flames (not that they never happened). Gentoo IRC has always been helpful - even when I want to do stupid things.
I tried to setup a Gentoo system for fun last weekend. (Crazy idea of a "fun weekend," I know.) I got to selecting a profile and wondered why there was no `systemd-hardened` profile. I was googling to try and understand what the hardened profiles do and found this thread[1] which said: "My personal opinion, having read many of the threads I've referred you to is that systemd and security go together like windows and security. That is, its an oxymoron."
Maybe we have different ideas of what constitutes flaming, but to me comparing somebody's choice of operating software to the "W-word", in a linux distro support forum, is about as inflammatory as it gets. Saying that systemd is insecure-by0definition is also quite rude. This is several years old, and I'm sure things have changed in the intervening years, but as a perfectly happy systemd user I can say that thread definitely left a sour taste in my mouth, at least initially.
