I can only echo what others have said, maybe having a smaller layout to show larger locos is better.
I have been in n and oo gauge and now in 7mm I only have a 5ft end to end until my garden layout is built. My first loco was a Heljan deltic then a Heljan 47, which I'm fully aware of detail inaccuracies, but since then I have purchased JLTRT loco kits, brass built locos to strip and repaint. Am I a rivet counter? No, do I find 7mm a much better presence on a small layout, definitely.
If it wasn't for the rtr companies some people seem so keen you put down because they are not perfect I wouldn't have touched a kit, therefore showing that the rtr got me intrigued at wanting to try kits and I'm certainly not a rivet counter. If I have a class 37 that has a few less rivets but looks like a 37 I'm happy.
A hobby is what you make it, some people are more detail focused than others. So I find that massive rant telling people to stick to 4mm totally unjustified.
I'm not trying to cause offence, but only say that rtr could be a better way to get people started and then be start getting kits and building confidence in want some people think is an elitist scale.