People expect a full on Shonen MC that goes through all the struggles of a normal person in about 2 seconds. This anime makes fun of that and i think people forgot that this was a parody/comedy anime that makes fun of anime like SAO and in that regard its a lot like OPM which also mocks the Shonen industry.
And for the other parts that people don't like about the anime is the MC being a "looser" and "sucking" but i just think that it hit too close to home for them.
But I found it refreshing and after about 3 months of not being able to find a anime that was worth while I finally found this. Overall great anime for once im telling you to not look at the reviews or ratings even though they are usually correct, this time they are not.