As someone who worked as a wave pool lifeguard for 8 years and is a current certified Water Safety Instructor, I mostly agree. The large rafts are never really what I have an issue with. It's water wings and other personal flotation devices that are much more troublesome.
Parents are a huge part of the issue. PFDs give them a false sense of security where they feel like they don't have to watch their kid. The best change my old pool ever made was banning them (besides USCG approved life vests). The rafts were almost never an issue unless parents stuck their kid in the middle and stopped supervising (which happened a lot and we'd yell at the about). Crappy parental supervision is the cause of most problems at pools.