I've been hanging around one of the forums for a couple of years. I find the whole thing fascinating on one hand and worrying on the other. The general reaction to a post swing from 'nice work Dave' to something less friendly. Recently I noodled into a couple of FB groups. It seems to be worse, with people getting upset all over the place. I had to tacitly agree with one commenter yesterday who said that experience counts for nothing. This is an online problem only it seems. People are more than happy to turn up at a show and talk to say Gordon Gravett over a demo table, nod, take any advice on modelling and leave. Online people post photos of layouts, I assume for some sort of reaction, but when they get 'improvement suggestions' the fire starts.
There are generally two types of modeller these days: the home worker and the exhibition worker. The later takes his work out and expects reaction good and bad. The former doesn't. The exhibition managers are the filter for this. The internet doesn't filter and the home worker is free to publicly display, but without the filter gets upset when the reaction isn't purely heaps of praise. The exhibitor is used to a bit of flack and being ignored at times.
The reason FB is worse (and I'm about to be a grumpy old man here) is possibly because it is inhabited by a younger modeller possibly one who is used to being told that there is no such thing as failure. The older hands know that at least 50% fails and will take the advice. I'm generalising of course, but we do seem to be less forgiving and less able to learn. Maybe it is just too easy now to get a basic layout together and say 'look at me aren't I clever' without the struggle period of learning the craft. The older hands have done this, know the pitfalls and have made the mistakes. We can all learn from experience.