Comments on slashdot would be off topic, trying to be funny, or just plain juvenile. I don't see this as being any of those.
Passionate sure; on topic yes. Free software is full of passionate people. Passion drives debate and causes people to make things better. Lennart is passionate about systemd and pulse audio, just read his posts. And good on him. Not everyone is going to agree, and that's fine. Trying to shut down dissenting opinions by talking about political correctness is OFF TOPIC.
If there is one thing that characterizes the people on LWN, it's that they are political correctness Nazis. Oops I mentions the Nazis, my bad. But I'm sick of the conversation being one sided in controversial topics.