I think there's like a confusion here, where people think tech is the direct cause of many of these symptoms. In reality, I think that pervasive tech can be a cause of depression, but it's the depression itself that in turn wreaks havoc on your brain and produces the myriad other symptoms mentioned.

Not being able to concentrate, escapism (fixation on superficial things/people, buying things online, imagining some perfect life you deserve to be living), sleep/restfulness disturbance (do you stay up to all hours and then frustratingly wake up early anyway? how about get in a solid 8 hours but wake up feeling like dogshit?)

That's not tech overdose, that's depression.