Not very long ago, quite a few questions on this site were 'protected', i.e. they were closed to the visitors with no reputation, but were otherwise open. Nowadays one doesn't see that anymore, and there doesn't seem to be anything on meta-ELU that would explain the disappearance.
If the option of 'protecting' questions has been withdrawn by the 'headquarters' of the Stack Exchange, is there any consensus on what is supposed to be done now with the questions that, in the past, would have been protected?
What prompts my curiosity about the matter is that I am getting an impression that many questions are now closed, not because there is anything really wrong with them, but because they happen to attract low-quality answers from one-time visitors, i.e. because they are the kinds of questions that would have been 'protected', but not closed, in the past.