They’re not saying that the author can’t post whatever they want on their blog.

They’re saying that we, as a community, should not elevate unsubstantiated writing that comes across as “I don’t truly understand these things or have deep experience, but this is what everyone else says on every other blog post or comment, and I’m parroting it”.

I would add on to it that I feel there’s sometimes a real thing in these discussions where reviews like these often come from people just tinkering and looking for the next thing to mindlessly experiment with. It’s not always representative of real world trade offs.

(I say all this as someone who self hosts a Gitea instance)