Did it lean left in the 90s? the 00s? It seems that the progressive turn happened after tech became mainstream and recruited hordes of all kinds of employees, and implemented diversity quotas
Well "left" and "right" are kinda under-specified terms, and a simplistic one-dimensional model does not even begin to capture the full range of political orientations, so it's kinda hard to talk about this. At one time the "tech world" seemed to skew fairly heavily libertarian relative to the general population, but libertarianism does not fit anywhere in particular on the one-dimensional left/right continuum. As many libertarians like to say "We are left of Left and right of Right at the same time."
All of that said, I don't think there's any question that has been something of a shift in the prevailing zeitgeist among "tech people". But properly categorizing, much less explaining, that is a job I'll leave for somebody else.
also "tech people" is underdetermined. Are there prominent founders who are 'woke'? prominent developers or technology pioneeers? Those tend to be generally individualist and libertarian
All of that said, I don't think there's any question that has been something of a shift in the prevailing zeitgeist among "tech people". But properly categorizing, much less explaining, that is a job I'll leave for somebody else.