I think it also encourages socialization. Chatting with someone instead of being engrossed in your phone.
I did a screen time detox a few years back. After hearing a similar idea about needing to get to boredom sometimes and not just escaping to a device. Only used a computer for work and exclusively worked on it, then no screen time whatsoever. Maybe lasted 3 weeks or so and made me more interested in stuff like reading, drawing, etc.
From time to time I follow a policy of 'no idle screen time'. Essentially this means if I am using a screen I must have a definite purpose in mind. It really cuts down on how much time I spend on my phone or computer in general, but ironically increases the amount of work I get done (I work almost exclusively on a computer).
Some benefits I noticed after a short while include feeling much calmer (low level feeling of anxiety largely absent), actually actively listening to music again (instead of just using it for background noise), reading books again (even renewed my library card after 10+ years), keeping a more organised home, eating better, getting more exercise, and organising more time to spend with friends and family.
I did a screen time detox a few years back. After hearing a similar idea about needing to get to boredom sometimes and not just escaping to a device. Only used a computer for work and exclusively worked on it, then no screen time whatsoever. Maybe lasted 3 weeks or so and made me more interested in stuff like reading, drawing, etc.