“If shailos several times per week is what many people are accustomed to, wouldn’t all pulpit rabbonim, or whoever is answering these shailos, be very busy every day answering many many shailos? Especially if they have a large congregation.”
1. That’s probably another reason why people don’t actually ask all the questions they have. It wouldn’t be practical. In the case of several of the questions I mentioned, really what people should be doing is learning the halachos.
For example, with hilchos brachos, I came up with this list because I learned and taught hilchos brachos, and I realized after I learned it, that I really had these questions all along.
With many or most of the issues, I may have realized that I had these questions, but I was reluctant to ask because if I don’t know about an entire area of halacha, what I need to do is to learn that area of halacha. I can’t just call a Rav and ask him to teach me all of hilchos brachos (or even a particular topic in hilchos brachos) on the phone in 2-5 minutes.
2. That is probably why they have halacha hotlines.