None of those things are necessary. Like I don’t even have email configured on my server because I don’t need it at all except when the developer unnecessarily integrates it to the extent that it breaks it.

Depending on the view, a functioning service something like password reset is necessary. To design the software that it can ship without functioning password can or cannot make sense, depening on the design choices. Depending on what else got send via e-mail designing the software around that can be challenging and burdening for the future of developing.

If the setup required you to setup e-mail, the software and then also the developer can always assume there is a communication path to the individual user.

As i said, it can and cannot make sense, but saying

That makes no sense.

and not even trying to put yourself into other shoes just does not make sense.