Thanks for bringing this up!
Questions concerning the etymology of Russian compared to Latin are welcome and on topic, but they must meet some quality standards.
I agree that in many of those questions the standards are not met.
There are some nice online resources out there, and a poster should check some of those and ask questions that arise from studying those resources — especially if there is a longer series of similar questions.
If a user consistently asks questions deemed unwelcome by the community (closed or downvoted), they will be automatically banned from asking more questions by the system.
Moderators can see in any users profile whether a ban is active and whether, if active, the ban has been encountered.
I will not share to-moderator-eyes-only information here, but we are aware of the situation.
As the questions are not abusive or hostile, I find it best to let the automatic ban system take its course.
If a user switches accounts to circumvent a ban, that can be detected.
That would be considered actively fighting the system (which is far worse than producing content others deem low quality), and there are tools in place to prevent that.
Collaboration between SE sites is also possible and done regularly.
Moderators do miss things.
If you notice a suspicious pattern or find something out of place, please raise a flag.
I think we should have a custom reason to close questions like that.
They are on-topic, and sometimes it is clear what is asked, so the usual "off-topic" and "unclear" reasons are not applicable.
We can add a new reason for closures that says "insufficient research" or some such thing.
The previous meta question about getting such a tool had so little activity that we felt it was insufficient grounds to take it to action.
But we could start anew!