It's uncanny how much this sounds like Viper the Rapper. The difference being that this is actually decent as far as that style is concerned (probably because unlike him, you aren't stretching yourself thin by putting out an entire album EVERY DAY.) Maybe you should start making vaporwave from now on, because you really do have the voice for it.
I think the biggest problem with the song is its length. Since the song is really just there to carry one joke, having the joke last almost four minutes gets old (two minutes would have been more appropriate, and comedic rappers like Pink Guy realize this all too well.) Moreover, since your greatest strength (multis) gets shoved under the rug for the sake of carrying one rhyme scheme all the way through, the joke only gets old that much faster because there isn't any substance or even a reprieve from the central theme.