for the most part of lint filters......with proper washing techniques, lint will be held in suspension and rinsed away with the water......
I have removed many broken self-clean filters from Kenmores, and replaced with a piece of plastic pipe, no one ever noticed a difference......same as the GE FF, or Maytags, you could leave the filter out, same thing, no difference....
only thing to really worry about, is if your machine drains into a sink, and to keep an eye out for the lint that sometimes can clog the drain....
keep in mind also, some filters stop working, or water flow restricted once filled, models like GE FF never clog, no matter how much lint it traps....and some more effective than others
outside of a solid tub with an overflo rinse, most manufacturers have this lint filter gimmick, pulling water from either the side or bottom of the outer tub, when in reality most of the lint it floating on top of the water surface....
self clean filters are nice, but its up to the agitators ability to get the water flow into the space between the inner and outter tub where filtering is happenning, pulling from, and returning to the outter tub......
GE probably had it best with their solid tub machine, water and lint overflowed in to the outter tub, pumped back up, into the moving filter, and lint free water returned to the inner tub....
but I think it was a time era thing, we had a lot of textiles that gave off a lot of lint, so came the lint filter, and permpress that wrinkled easily, special care cool down to reduce ironing, today, its more of an odor thing, washers that smell, and heavy perfumes in detergents to cover it up.....I wonder whats next?