Ovinomancer
No flips for you!
"Roleplaying" is a wide band of activities that usually gets coopted by people to mean a specific, narrow set of activities they prefer. It's better for clarity to explain what you do than to just use the term "roleplaying."
That said, what the OP is talking about is better described as a shift in agenda of goals of play rather than a shift in roleplaying. The agenda of play has moved which means that the modes of play have shifted. There's no evolution in "roleplaying" just a different set of agendas that are part of the popular zeitgeist for D&D. Play endorses a different set of goals of play more strongly than it used to. And people have either moved their preferred agendas as they've found they prefer different thing or just to keep up with the cultural shift in the hobby.
That said, what the OP is talking about is better described as a shift in agenda of goals of play rather than a shift in roleplaying. The agenda of play has moved which means that the modes of play have shifted. There's no evolution in "roleplaying" just a different set of agendas that are part of the popular zeitgeist for D&D. Play endorses a different set of goals of play more strongly than it used to. And people have either moved their preferred agendas as they've found they prefer different thing or just to keep up with the cultural shift in the hobby.