If there was a complaint about how systemd complicated builds and tests in a specific way the commenter could name, that'd be valid. Just finger-wagging is tiring after how many, 10 years?
It's similar for systemd. It's a poor architectural choice and it needs to be undone. And that's ignoring the personal drama surrounding it over the years which, indeed, needs to be let go by now.
As for topicality: This post is about the "sausage" that is a distribution. Following this metaphor and mentioning a problem with a certain kind of sausage is on-topic.
* The opinion that systemd is bad is more controversial here than the opinion that Microsoft is an unethical company with intentionally invasive software.
* There are Linux distributions that do not use systemd