The third question you posted is tied for the second most-voted question. It's tied with Non-trivial difference(s) between Computer Algebra System and Proof Assistant, which is also a "what is bread?" type question (maybe "What is the difference between bread and tortillas?").
In sixth place, we have What is the easiest proof assistant to start with? which is a question of interest mainly to beginners.
So some of the questions of the type you don't like are among the top-voted questions on the site. For these questions, I don't think closing them is a good idea. Trying to get 5 close votes, and dodge 5 reopen votes, for a question that currently has 19 upvotes and 0 downvotes seems like a losing battle.
If you want to stop these questions, you would have to persuade people that they're not good for the site.
Personally, I think they're fine - there's only a small number of broad, low-level questions of this type that can be asked, and once they're asked we can close future repetitions as duplicates.
One can also find beginner-level questions on the least-voted questions list. Some of these have been closed. In fact arguably every beginner-level question below 5 points has been closed (but not every question that has been closed is necessarily beginner-level). So for some of these there does seem to be community consensus that they are too low-quality for the site.
(I guess it's worth pointing out that I am at most an interested novice and I asked a question, but I think the question I asked is reasonably good - in particular, it's not easy.)