I don't think its boredom. It's keeping racing and insisting thoughts, the uncomfortable things at bay, and this is worse than not allowing one to get bored.
When you take everything from the brain, and sit silently, it starts to remember. Oh, the plants, the presentation I'm going to give, financials for the month, remaining tasks at the office, etc. Maybe some worse issues which bother you but you try to ignore.
Escaping into some distraction from these uncomfortable thoughts is always marketed as the norm, the way it should be, but it's not. One should prioritize mental discipline over fidgeting and dopamine hits, IMHO.
I know not every problem in life have a solution, and battling with some problems is hard. But running away from any and every problem is not the solution.