I see no problem with someone developing something for fame and glory and not really want to put lots of effort into maintainance.

It if it gets popular, the community (aka users) can maintain it. If the community also does not want to put in the effort to maintain it, they cannot really complain about the original author also wanting the same.

The only problem is when the original author doesn't want to maintain things, and also rejects help with maintenance. If that occurs, a motivated community can fork things and continue.