social media in uk law = any website with a message feature. social media in common parlance = anything from whatsapp and discord to youtube and tiktok, even sometimes aliexpress. anything with a doomscroll feature. anything showing videos, messaging between users allowed or not.

its common usage is confused, the same as the common usage of trolling has strayed from its original meaning because normies picked it up and started using it to mean anyone abusing someone from an online account.