The CAA main cause of concern is Ryanair charging for under 12s to sit with their parents, this is a mandatory instruction for an operator in the UK. This is for the safety of all onboard an aircraft, I certainly would be making sure I got to my daughter, to get her off the plane in an emergency as would most parents, it’s human nature. This is why the policy is in place, also woul you want your child sitting next to a stranger. I know of two investigations running currently at an airport in the UK where a passenger woke up to find the person next to them was sexually assaulting them.