I agree. I don't think it's a particularly good parody of yakuza films. The setting is absurd, the juxtaposition is absurd, but in the end the characters act exactly the same way they would in every yakuza film, and there's even arcs and episodes that you're clearly supposed to find seriously emotional. "Absurd world that everyone takes seriously" can make for good comedy at times, but it's a premise that burns itself out real quickly once you realize that every episode is a yakuza movie cliche juxtaposed into Akiba, and this doesn't make for actual, meaningful commentary on the genre.