I second that. On Steam 2 days ago a chinese modder uploaded a locomotive with 546K tris and no LOD - and you need to couple 2 of those - and also received comments about that fact. He updated the model and the download went down from 1.1 GB to 670 MB. Still a heavy download for just one locomotive. When do you see all those details? In camera tool mode when 30 cm away from it?
Are those even visible details or a lack of mesh optimization?
In normal play mode you cannot come nearer than 15m or so. How far away is the camera when you zoom in fully?
And then many of those "details" are just invisible, because they got parts behind parts.
Plus, the lack of LOD on many models out there.
When creating a high detail model then please add at least 3 additional LOD to it.
When I zoom out and hover 250m above I don't need 100K tris. Even 10K tris I don't need. Do I need 1000 tris? Hmm. How many pixels is the model then btw?