I heard about some agitator configurations not being good to some kind of clothes, like catching and pulling in the fins, maytag fins might do that to some thin fibers and yes like large net fibers as fins are not attached to the base but are flexible to some extent, though that is something that usually happens as you overload and or underfill it..and not so likely.
Said this I always heard about maytags as well designed in this sense... pretty gentle yet effective.
The sort of damage you describe sounds more like a rough tub damage than agitator, especially if you have checked it, not much about the holes but what makes me think it's rather the ends of clothes you mention which if I have understand are chewed and "grated", these are usually the tails, collars and endings or high ground sewing that are the most rigid parts on the clothes and the ones that would swish against the tub with a greater "resistance" than the softer more flixible parts (not sure if resistance is the right word to use here).
I recall I've read something on a guy who tried to descale and remove rust on the machine with some kind of acid product, the guy filled it put the acid and let it sit overnight, while the acid cleaned the tub and the outter tub very well he claimed that after that his machine has never been the same and actually started to give the same kind of damage you describe, it turns out that the kind of acid he used was hydrofluoric acid which is a common rust remover ingredient, and that kind of roughened up the porcelain that is worked and meant to be smooth and not create friction with the clothes..
Porcelain, especially the one used in washing machines will stand and resist many acids, but if there is one acid that porcelain will not tolerate it's right the hydrofluoric.
So I would compare your tub to the one of another similar Maytag if you have a chance, they usually are very shiney, if it's dull then maybe that's the problem..some previous owner may have done the same thing...
[this post was last edited: 3/26/2015-19:41]