I prefer scratch building myself but, as Paul has said, there has been a huge change in the way the hobby has developed over the last 20 years or so. However, you can’t turn the clock back so any type of model boating is to be welcomed.
I do think scratch building should be encouraged as to my mind it is the natural progression from kits. I think a lot of people are put off as they consider it to be too “difficult” but in reality it is just a development of your skills and, as David says, it is ultimately much more satisfying.
But people want different things from the hobby. Whilst some of us derive the greatest pleasure from the building process, others just want to get on the water as soon as possible and have fun. So it’s “whatever floats your boat” really.
Colin