Everything is so distorted in grindcore bands that normally you wouldn't hear any bass sound, at all! But, also, you have some great basslines adding weight to the songs in grind bands like Napalm Death, Brujeria and Gorerotted.Lots of bands do this. Mid-era Pig Destroyer did it. Discordance Axis did it. Magrudergrind did it. Hm, notice a pattern with these grind bands?