Breeders are concerned for the breed, there is a lot of work involved with getting the right stud for a queen, and keeping the gene pool strong.
It's not everyone has the support to hand raise a litter if the queen is poorly, or even if she needed a cesarean section, and has delayed milk.
Not everyone wants, or can have a moggy from a shelter: we have a pedigree cat as the breed is low allergy, and I wanted to be able to have one for our DC who wouldn't have set me off. Yes it's a pity owners are irresponsible and don't get their kittens spayed and neutered, but it's not really relevant to this thread how many unwanted black / black and white kittens there are in shelters.
When we were thinking of getting our hypoallergenic cat, I talked with the breeder a lot, and was in contact with her by email and phone for a year iirc before we popped over to her house to be formally interviewed.
Luckily I like her, and we work in a similar field, but there is no way on earth I'd breed cats, having seen how hard she works looking after her beautiful cats- she also hand reared a litter of 8 Siamese kits the queen had rejected as a favour to an inexperienced novice breeder at the same time as she had our kittens litter to look after. She was wrecked feeding 8 kittens with syringes every two hours round the clock for three weeks.
Conscientious breeders like this make no money on their cats: they feed them all top quality raw diets, and they don't stint on the veterinary care they need.
Breeding cats isn't a hobby, it's more of a vocation, and breeders want to be very sure that you will look after their little kitten as well as they do. We had to sign a contract that we would spay or kitten within six months, and wouldn't breed from her before she released her to us.
I don't think that the breeder was weird at all OP, sounds pretty par for the course. Sorry if that's not what you wanted to hear OP 