I think where technically the disruption never happened was marrying the blogs with diaries. You write something in your diary app, decide that you want to publish it and just do it to a platform of your choice.
But maybe it all is a wish from different times, because today blogging has to identify the audience, care about nouvelity of the content, care about visitor statistics and self-promotion... Back then, maybe 20 years ago there were a lot of bloggers just telling about their little life and I miss them.