I'm not sure why using 'them' is any worse. It's a nice identity-agnostic pronoun. Mixing pronouns with names is much more natural than repeatedly using the name. I don't get why it's an issue at all.
I'm saying that if you don't know a person's pronouns at all and you're not sure if they/them sounds right, you largely can avoid it altogether. And I don't mean by just repeating their name over and over (which I agree sounds weird), so if we take the original comment:
> Feel like it would be easier if he rewrote it from scratch and then copied the business logic
then using their name is totally pronoun agnostic as discussed:
> Feel like it would be easier if foone rewrote it from scratch and then copied the business logic
but you can also not use name, pronoun or anything:
> Feel like it would be easier to rewrite the app from scratch and then copy the business logic
or:
> Feel like it would be easier if the app was rewritten from scratch, and then the business logic could be copied
English is really flexible, and to be honest I think these look quite natural and don't sound like I'm nervously trying to avoid offending anyone.
I guess because "they" and "them" is plural, and it can confuse people to think that you're talking about a group of people instead of a single person? At least that's what confuses me (as non-native speaker) quite often when I read someone talking about "them"
Singular "they" predates singular "you" [1]. If someone tells you otherwise, tell them they are wrong. That use of "them" as in the previous sentence has been correct for centuries.
