The numbers are meaningless, even if they are accurate, which I sincerely doubt. GDP is up 5%? My salary hasn't gone up 5%, but my grocery bill has gone up way more than 5%. Health insurance costs went up more than 5%. Maybe all those increases in prices are boosting GDP, but wages aren't keeping up. Maybe the numbers are hand-waving nonsense.
People know whether they are doing okay or not. GDP is a blunt instrument metric of little value except as a broad comparison. But noting that it "happens during a Democrat presidency" is quite telling.