Since all three questions you cited as examples were posted by the same person, and were all heavily downvoted and deleted, it's likely that this user is question-banned, and the problem has already solved itself.
The quality filters are not a panacea. All they do is look for textual patterns that are highly predictive of question failure. In that sense, they are completely statistical in nature; only those things that accurately red-flag questions that are likely to fail are included in the filter.
The resulting effect is that some things which you might expect to be caught by the filter (such as not capitalizing i for example) are not, because they are not sufficiently predictive of question failure.
What remains is the actual meaning of the question, and since we have yet to figure out how to get computers to divine meaning, we still need human beings to moderate such questions.