On the last point, yes this is paternalism, but I'm not convinced it's the worst sort. On your big TV example, you probably shouldn't be prevented from buying

On the last point, yes this is paternalism, but I'm not convinced it's the worst sort. On your big TV example, you probably shouldn't be prevented from buying it, but other measures to discourage you from buying it could in theory be welfare-improving on a societal level, and if they were then that would constitute part of a case for imposing them.