I think this is less a sign of depression these days as much as it is just falling victim to attention capitalism. Your brain chemistry is being hijacked to keep you scrolling and watching and wasting time.

Losing interest in things you want to do is a sign of depression, this post is more just pointing out the reason people are depressed.

And just a dash of ADHD to spice up the ennui.

Well, depression/anxiety is spending your time agonizing about it and not doing it. Most people are doing this to some extent they just have brains that don't have them dwelling on it all day. I have friends of all sorts who casually lament not reading or not picking up an instrument. Some are depressed some aren't.

At least with me I am not really in the mood to do that and will do something else that has caught my attention at this moment.