The bar chart might be more useful if they weighted the source with its number of users. Facebook isn't 7 times more hateful than Telegram. It has around 3.5 times as many users - but also the two are used very differently. I use Telegram, but only as a free messaging platform for automated alerts.
Then there's the algorithms, which tend to feed you what you engage with and from those connections you've made on it. The exception recently is X which has a very strong political bias and has turned into something that pushes hate very strongly.