This makes a lot of sense. The same thing happened in the past with new technology, such as the electronic spreadsheet:
"since 1980, right around the time the electronic spreadsheet came out, 400,000 bookkeeping and accounting clerk jobs have gone away. But 600,000 accounting jobs have been added."
Episode 606: Spreadsheets!, May 17, 2017, Planet Money
Given that the US has transitioned out of manufacturing and into businesses services - I don't think much of this is explained by technology creating new jobs.
I think it's just explained by the workforce growing - and the shift in the US's role in the global economy.
So the real question is - whether the ratio of different roles changed vs total population.
"Though the spreadsheet was supposed to make clerks obsolete, it in fact just upgraded their job requirements to allow the operation of spreadsheets"
And probably their salaries too.
This is more in line with the discussion related to OP, as well, as devops employees exist, even though apparently it is automated.