The argument for animation is stupid considering super is known for having bad animation and it's also stupid because your comparing modern animation to classic which is unfair because the amount of technology available during the 90s is rather limited compared to now.
As for writing it's stupid on both ends but gt stays closer to established lore than the latter, It does change some details like there needing to be a moon to become an ozzaru and as for scaling gt is better because it stays consistent with z which is why the side characters do nothing.
At least goku being stupid in gt made sense because he was a child while in super he's dumb because they wanted that same type of dragon ball style humor that everyone dislikes despite it being prevalent throughout even dbz
I think gt is overall a better product but that's not saying much considering both are really bad.