Well, they directly affected a lot of the music you like, probably.
Hell yeah; Morbid Angel at their best.I'm not a fan atm of later Morbid Angel, but AoM is good.
Yeah, probably. I guess. I mean, were they really all that influential? Was any band really all that influential within death metal? I can't imagine that extreme metal would have developed a LOT differently if you could prevent any one band from existing. Faster and heavier is a sentiment shared by ton of metal fans. Musicians with songwriting talent exist in many bands.
This is pretty much completely wrong and the last sentence wasn't even relevent to the rest of the paragraph.