Would Deus-Ex: Mankind Divided's pre-order bonuses have set a dangerous precedent?

Pre-order bonuses have always been a topic of heavy debate. When the rewards for pre-ordering Deus-Ex: Mankind Divided were announced, there was an uproar. The concept of locking off content until a certain amount of people pre-ordered was certainly appalling, but could this ever happen again? Are there any benefits to the consumer with this system?