The Daily Mail has an annual recurrent story that gets rehashed so often you can almost set your watch by it. They do a comparison of airlines and by effectively rigging the sample they set out to prove that British Airways is cheaper than the locos. Last time the example given was something preposterous like a family of two adults and four kids each with 40kg of hold luggage, who want allocated seats, a three course meal and are very forgetful when it comes to boarding passes.
In reality the vast majority of pax use the airline as it is designed and benefit as a result. You may hear many moans but most of those complainers will be repeat customers, so it can't be that bad.
If you really object to the service model, and that is your prerogative, then vote with your wallet and take you business elsewhere. I find it hard to comprehend the attitude of refusing to buy priority boarding but expecting priority anyway. A no-cost way of achieving the same result would be simply to get to the gate early enough to be near the front of the queue.
In my experience the cabin crew will normally do their best to enable families with kids to sit together, but groups who turn up last and then expect to get seats together really don't help themselves. You know the drill with Ryanair; it's not complicated and if you really don't like it, choose an airline that you do like.