I'm not sure how best to put this, but I'm not so sure detaching is the answer here, at least not long term. I can detach pretty easily and start daydreaming even while I'm on social media. If what I'm looking at isn't interesting enough, I start skimming. While I'm skimming my attention is divided between trying to find stimulation and whatever thing that's got my larger attention, usually some personal thing. I might bounce back and forth between these things many times while I'm social media'ing.

Work is the same thing. My mind switches between active problem solving, and detachment, while my subconscious is working out a solution. Work usually isn't maximally-stimulating, so I'm always dividing my attention there too.

For something to commandeer my full attention, it has to bear down heavily on my 'main life loop'. Social media often manages to do this, with some really smart person's Quora post incisively dissecting a topic I'm intensely interested in.

My mind 'forages' through social media looking for stimulation. No distraction can literally steal ALL my attention, I always have some left over.

I've altered all my computing environments to avoid any kind of unwanted animation. Animations on computer screens do manage to snatch me out of my current mental loop. If social media did this, then it wouldn't be useful for me and I wouldn't bother with it.