I suppose it's all because of worldwide economic inflation...
I am not an economist, but I understood it the other way around. Supply chain shortages are leading to inflation because you have low supply and high demand.
Pandemic hits, and product and raw / semifinished materials stop being produced.
Product is not being product, but is still needed (i.e., no one's making computer chips, but people are buying electronics out the wazoo to work from home, school from home; no one's making cars, but cars still crash, break down, etc.).
Product starts being produced again, all fighting for the same raw / semifinished materials.
Everyone making product starts throwing around money to compete for the raw / semifinished materials, so prices on those materials skyrocket.
Companies realize people will pay whatever number they throw out for products they need because no one can make enough of them.
Which leads us to our current situation: Record profits for some companies and high prices for products and materials.