How many different accounts do you have to delete though? For many of those people "t" and "f" would be substituted by "y"toube, "r"eddit, etc. It doesn't have to be a social media site, might be news you're intrested in, tech sites, deals aggregator.
I get what you mean, but for someone with habit of looking for distraction whenever they have nothing to do it won't be a cure, bandaid at best.
But, some options are better than others. I used to be on Twitter a lot, and had that reflex for a time after deleting it. Now... it's just not there. I did replace it with a handful of communities and some other forms of content, but it still feels better than before.