I agree that truthfully we're not talking about excluding those users, but only preventing those users from upgrading to the latest version of the app. But for lots of businesses those two things are viewed as effectively the same, because they believe they are adding value to the new version of the app that will result in greater user stickiness and direct or indirect revenue opportunities.

Honestly I'm thrilled anytime I'm working for a client that has a iOS(-2) rule versus an iOS(-4) rule.