I think you're painting with a pretty broad brush to say that all hybrids are prone to health issues. Technically, any first generation barnyard mix is a hybrid. IMO, those hybrids have the advantage of "hybrid vigor" and may be better layers, have better health, and live longer than either of their parents which are of a specific breed. The term "hybrid vigor" comes from the deliberate or not so deliberate mixing of breeds or in the case of plants, varieties. Often producing a mutt with superior health and productivitiy. Yes, the super layers and super meat birds are prone to problems. I agree with that.