Source: former deficit hawk convinced hyper-inflation was just around the corner for half a decade.
Inflation happens when lots of money chases too few goods or workers. We see it in housing, stocks, perhaps also education and healthcare. The money does go somewhere but not to where it is most effective. Why is there no inflation in salaries? Because of underemployment. Companies can always fill their open positions and pick among the cheapest applicants. Why is there no inflation in other consumer goods? Production is happening primarily in developing countries with an even larger surplus of labor.
The answer is probably a little boring and obvious. Give money to people that will spend it immediately, rather than to people who will try to convert it into inflation proof assets. The coronavirus related economic stimulus packages are pretty much the only policies that even attempt to do this.
If they overdo it can easily result in hyperinflation but I think inflation is overdue.