If you don't actually want to stop, then these opportunities for pause do nothing, because in that pause you reaffirm that you do want to continue the behaviour.
This ties into why addiction is so powerful, while many people know their addictions are bad, they enjoy them and don't actually want to stop. I.E. They don't value the results of cessation versus keeping the addiction.
It's entirely possible to reach for your phone, then tap an app or load a website on your computer while being semi-aware of your actions, and this is typical for people with ingrained behaviours. These people can start scrolling instagram or twitter without really thinking about it. Having a forced circuit breaker gives these people an opportunity to stop and reconsider their actions.
At the end of the day only you have full agency over yourself.