I think the problem with most harem games, isn't the large numbers of girls available to have in your harem, it's that the vast majority of players come to these games while they're still in active development, and so they're getting everything in drips and drabs and so complain about how it's ages since this that or the other favorite girl of theirs got content, forgetting that were you to play this large harem game for the first time when it's complete you'd never have any complaints at all.
It's a matter of perspective.