I don't think there is anyone, young people included, who feels that students should have unlimited access to digital devices during the school day.
There is also a lot of evidence that, particularly for older students, such as teenagers at the secondary level, there is a point where they need to learn how to manage their device use, because this is not something that happens magically when we graduate. When we go on to post-secondary education or when we go on to the work world, all of those distractions will continue to be there, but we will have fewer opportunities to make up for our mistakes.
I do think there's a lot of good evidence that suggests that for older students, the digital devices can be used as a way of learning to manage those distractions. We have to teach them how to make these a healthy part of their lives, how to use them effectively and how to manage the distraction of digital media.