Apples and oranges to the Left, especially when science, etc. is as agenda driven as it is today.
“Under the 1920 Census Act, the 1921 census can’t be published online until more than a hundred years have passed.”
Hmmm... They knew about the Internet in 1920? Amazing.
Started on the net late 1990.
At that time I could find more info on my ancestors than I can now. Now a search just leads to junk.
My grand parents all born around 1900 told stories about many events they lived through. WW1 and WW2, the depression etc. They never talked about the 1919 pandemic.
For the US census, the rule has been 72 years. The 1940 census is currently available. The 1950 census should become available next year, unless they change their minds about the rule. The ones which are available can be seen online for free at FamilySearch.org (that does not include the 1890 census which was lost in a fire, or some of the early records which were apparently lost when the British burned the government buildings in Washington in 1814).