What makes you think reading the code makes someone less curious than relying on someone else’s made up answer about it.

If all you have to contribute is being insulting, you don't have to comment.

Go on, then. Point them out.

As it is, you've joined the ranks of multiple others commenters who sound like cargo cultists, attacking OP for not understanding frontend dev without actually pointing out any issues in their writing. If it's easy to point out, then surely you can show how easy it is.