As much as the article is from cointelegraph, but it's half-baked and disappointing. It provides no data to show how popular the apps are. I don't have an Apple device, so I decided to check out Google playstore since Android has way more users than iOS and the trading apps aren't even anywhere close to the social media apps.
Facebook - 5B+ downloads
YouTube - 5B+ downloads
Tiktok - 1B+ downloads
....
Coinbase - 10M+ Downloads
Robinhood - 10M+ Downloads
So I don't know what cointelegraph is basing on.
Probably Robinhood and Coinbase was on top for a specific time and not for all time because we all know how social media works today, and its very popular compare to crypto trading.
Cointelegraph most of the time are releasing articles without a proper investigation or analysis just like this one, I doubt that Trading apps will ever take over those giant social platforms, even traders have their own social accounts but not all social media users have trading account, so this is too impossible to happen.