What a strange backhanded comment, if you can make it much better then feel free to do so.
sadly i’m not a game dev but i wish i get that career TwT
Well saying something is "badly made" is neither constructive or helpful. It just comes off as ill informed and rude
You definitely haven't made a game before, it isn't easy and given the limitations that Gameboy hardware has, he did a really good job.
It's hard to make a game, much less one on 30 - 40 year old hardware.