Earlier quoted context omitted.
I read "stock buybacks in 1982" as shorthand for "financialization and short-term thinking at the expense of long-term gains", which certainly happened across corporate America and Britain starting with Reagan and Thatcher.
You state that as if it is a fact, but from what I see the tech industry has engaged in the longest term corporate strategies I have ever seen. Amazon took losses for the better part of two decades before it showed a profit, and public markets would never even fund a venture like SpaceX.
So yes, Amazon represents 'good management thinking' post 2010. But not corporate thinking pre 1980s that, you know, build the US/UK to the positions they were able to cost on up until now.