I agree completely with your point. Just out of the blue, one of my images was hit with the mod edit (timg) tag when it was the same size as all the others I have posted (800 pix) because when I link from picasa I have it set to resize the original to that size. The file size is definately in the 300-400k range, but I always thought it was a "link" anyway, so not sure what gives here. The problem is the randomness of the edits, with many other pics on the same page of an equal or larger size. Maybe MR needs to clarify the policies so we know what will be left alone. I can see the point of using the timg tags when quoting and commenting on someone elses picture, but not for the original post.
Note: I've gone back through the thread and it appears that one moderator has decided to thumbnail nearly half the posted pics. Kinda makes it not nearly as pleasant to scroll the page, and if that's going to be the new status quo, then I'll probably stop posting - too bad. If I want to look at a page full of thumbs (not!) I can just hit flickr or picasa, etc.