Inflation is a function of the monetary system, and is felt in every good and service.
The author conflates inflation with supply/demand issues. As such all of his findings are, well, void.
Any business person who would put capital into a high-barrier to entry market base on supply shocks is an inherent moron. Supply shocks are transitory and short lived in nature, you'll never get up and running in time. Supply shocks can increase profits, but only when they are asymmetrical. EVERYONE is having issues moving their goods and getting materials, which is driving up the prices based on supply/demand.
The only real question is if the gov/FED throwing money into the economy is going to cause inflation. It should, those are fast dollars flying- people spend that crap as we have seen. These supply/demand spikes will go away, and then you can see what effect monetary policy has had.
Supply/demand is the waves, inflation is the tides/flood. Weather and climate. They use the same measures- water height and temperature, but they are different things, and people jack it up all the time.