This is why a single chart on imgur is bad and you should go to real sources. The way M2 was calculated changed in May 2020, a fact that should be on every reputable page containing that graph.
https://www.federalreserve.gov/releases/h6/current/default.h...
Also in a lot of ways M2 on its own is meaningless (money sitting under a mattress not being used doesn’t affect the economy) - velocity of money is more useful. Of course, inflation is complex and multicausal so this isn’t the whole picture, but it’s more useful than raw M2 supply.