What people need to try and understand, is that when Mr. Hassett says that the trends of the Obama economy show a distinct change when Trump took office, he is referring to supply side economics as opposed to demand. Hence every graph indicates a change in policy according to supply side economics and not demand side economics.
I personally believe that when Trump won the election, wealthy people with trillions of cash in offshore bank accounts were looking forward to investing that cash because of the policy shift to less taxes on corporate earnings, easing pollution standards, deregulating banking, and everything else that increases supply side earnings. Republican economic policy almost always favors corporate businesses. So this is why every chart shows an upward trend in supply side economics.
The economy under Obama was about protecting wages, making good health coverage available to all, preventing consumer fraud through better banking regulation, high pollution standards to protect our environment, water and air, better fuel efficiency for automobiles (less demand on gasoline), and investing more in renewable energy resources. So when Obama supporters say that the economy was already doing well, they are talking about an overall picture of supply side and consumer side economics.
Notice the charts that Hassett is not showing; that unemployment was already low under Obama, and there also is no change in wage growth after adjustment for inflation. Moreover, the same charts Hassett is using also show that the same supply side numbers he is touting, were also occurring in the Obama economy in 2012-2014. These numbers always go up and down and up and down again , etc.. I will grant you that under the Trump administration there are now higher corporate earnings, which is what his policies are meant to serve, but the 300 billion dollars in investment is offset by the 400 billion dollar increase each year in deficit spending, which the middle class will most likely be the ones paying for, either in more taxes or increased costs of living, or both.