$289 a day is not payment network transactions, that figure is complete and utter bullshit.
the vast majority of the so called "payment network transactions" are, funds to wallets, exchanges, tumblers ect.
Bitcoin payment network is tiny. I don't know a single person in real life that has ever used bitcoin for payments and I know 100's that have used paypal. The author of the chart is just spreading lies.
Perhaps a measure could be the amount of BTC used for goods and service as % of the BTC market cap. The volume on ebay versus the World money cap, would look pretty small as well. Way more Fiat in in speculation of Forex for example, about 3T a day,