I've been following this thread and also noticing the uploads appearing in the Routes section of the DLS. At the risk of sounding Nixonian, I would like to say this about that.
First, while we might question whether some of these uploads have any serious value, there seems to be no malice behind them. I think they are the product of a few pre-adolescents who received Trainz as a Christmas, birthday, or other gift and are revelling in the power to actually put something they have made on the Internet whatever it is.
Second, while it is tempting to suggest that Auran/N3V ban or intercept such posts, we have to be careful what we wish for. Whenever a board of censors is appointed to control annoying material from "other people," they always end up controlling "annoying" material from ourselves, because their mission is control and they seek to do it well. It always ends up as a bad bargain in the end.
FWIW, I say abide it. It does no real harm and their "routes" can be passed over in a few seconds, unless I have really missed something. And who knows, one of these folks may end up being TS2020's content creation guru.
Bernie