Not really, not if you don't want to spend time on curating posts, or if you want to get more rewards by creating "no content" posts, then upvoting them at the last minute. Such behavior is obviously bad for the overall value of the currency, of course, but that's not always a sufficient deterrent.

Especially in the case where someone controls the posting key for a large account, but doesn't have the active key, so they can never power down the stake. In such a case, they are incentivized to get rewards via author rewards of accounts they control as an indirect means of getting rewards for the stake held in the account.