Y'know, cuz he gets lost in a straight line
Its a great idea, me and friend had this as a running joke for a few years. It would be so funny if Zoros attacks got "lost" sometimes and it could have been attributed to having a "cursed sword" if Oda didn't retcon them but also it would mean, it would need to happen since he got the Sandai too lol. Given how the Nidai was "lost" for most of Wano at least, it would have worked too!
Imagine if him losing his eye made him less accurate too? Lol.
Unfortunately I can see a lot of Zoro fans hating this and taking it too seriously though. Oda could compensate by making his attacks stronger or and just as lethal as they should be but still? It would have been fun anyway!
Zoro has the funniest running gag on the crew too, literally running even as he runs in the wrong direction! Simple, wholesome and brilliant gag! (That wasn't flanderised as hell post TS either)