This should be the first thing you try. Something to keep in mind is that AI is just a tool for munging long strings of text. It's not really intelligent and it doesn't have a crystal ball.
To me it reads like saying "I typed pseudocode into a JS file and it didn't compile , JS is junk". If people learn to use the tool, it works.
Anecdotally, I've been experimenting with migrations between languages and found LLMs taking shortcuts, but when I added a step to convert the source code's language to an AST and the transformed code to another AST and then designed a diff algorithm to compare the logic is equivalent in the converted code, and to retry until it matches within X tolerance, then it stopped outputting shortcuts because it simply would just continue until there were no shortcuts made. I suspect complainants are not doing this.
In short: because it's faster and more flexible.