1- Maybe the realtor thinks you can't get financing for anything besides FHA. They are always obsessed about the financing.
2- If too many condos are non-owner occupied, then the values will go down because many companies won't loan on properties that do not have at least 80% owner occupied for the entire complex.
3- Realtors don't like to do much of anything. They pride themselves on showing two or three houses, filling out 15 pieces of paper and then asking for thousands of dollars. I have always been annoyed by them. In fact, experienced realtors refuse to work with buyers citing, "All Buyers are Liars" and "Listings is the only way to go". Most realtors don't make that much money, but they don't want to spend much time working for it either. It's because in real estate school they are taught you should buy the first one or two properties that come up and if you don't forget it. In reality, an awesome agent might be able to do that, but if we are totally honest here we know most agents sucks as the average real estate wage is like $1,800 per year.