Agree with you. I have a friend who has posted on FB about a long time friend of his, that I do not know, that had a SxS accident where his head hit the ROPS and caused brain swelling. I had been on the fence for a while and because of that I ordered a fresh air system for helmets for the Pioneer and I already have a helmet that will work with it. I get it, but until I can find a helmet that fits her, unfortunately she won't have a full face one. Too heavy of a helmet will cause a neck injury, possibly a severe one, if something happens. Right now the only helmet in the weight range that is comfortable for her that is full face and is a carbon fiber one thats $2700. While there are several XS helmets that fit her she can barely hold her head up they are so heavy. She can wear her bike helmet for now and her car seat is heavily padded and is one of the highest rated for car crashes. Once her neck is strong enough for a heavier helmet I'll have her in a heavier helmet. She will probably be in a booster seat/standard harness by that point.
Hunter Safety Products makes a NICE booster seat for the tiny tots that I have considered as well but the car seat FITS much better and is crash tested, so I am inclined to use it instead. Right now I have it anchored with the factory middle belt and the LATCH system as a extra point of attachment, since the middle belt isn't a locking belt like in a car.
T-ball is probably more for the bat than the ball but point made.