For what it's worth I think Ron does a great job keeping the signal-to-noise ratio managed. The reason you see so many closed questions is that there is a lot of noise - a seemingly never-ending stream of people who don't understand subnetting, students copying and pasting homework questions, etc.
My observation is that there tends to be observations like ...
If you go to the main page of Network Engineering the majority of the
questions are always closed as off-topic.
That is because they are off-topic. Should we just ignore the site rules?
It was closed because there's no paid support from the upstream vendor.
That's sad. We all know that Mikrotik is heavily used on enterprise
networks, and it's very big on ...
That question was first closed because it is too broad, lacking enough detail to be able to answer. It needs a good network description or diagram, the network device models, the network device configurations, any logs, debugs, etc. You can refer to the Network Engineering Question Checklist for guidance on what should be included.
The reason for closure was ...