From your article, M1 inclusions changed in May 2020, to include Savings & other Checkable deposits which were previously in M2. M1 is now effectively the same as M2 and is no longer reported independently.

To my knowledge, there have been no significant changes to the definition of M2 in 2020. The increase there is real. The M2 definition change mentioned in the article was on Jan 1, 1973.