I think our relationship with boredom over the past 30 years mirrors that of hunger post-industrial revolution.
Humans evolved in environments where both calories and information were very sparse. Natural selection encouraged a continious psychological drive to seek those resources whenever and wherever possible. Over-consuming food or stimulus was such a rare condition that we have very few naturally in-built mental mechanisms to avoid it.
And then all of a sudden our environment drastically changed. Sometime in the 20th century the central risk related to food went from starvation to obesity. In the 21st century the central risk of stimulation has gone from mind-atrophying boredom to compulsive zombie-like wire-heading.
To resist obesity we had to re-evaluate our relationship with the feeling of hunger. Always giving into our base impulse would mean that we gorge on calorically dense, hyper-palatable, nutritionally poor food from morning to night. Modern people had to learn that feeling a little hungry sometimes is okay. It's necessary for a baseline level of healthy physiology, and actually not that unpleasant when you get used to it.
I think we have to re-learn the same lesson with boredom. The skeptics are right. The average level of moment-to-moment boredom in 1980 was extremely high, and well past the point of necessity or even marginal benefit. But virtually no one with a smartphone ever experiences anything like 1980 boredom on a daily basis. While a lot of boredom is bad, we have to learn that a little bit of boredom is necessary for healthy cognitive and emotional functioning.