History ebbs and flows like the tide. A hundred years ago young people saw how censorship, racism, and authoritarianism were being used to maintain the status quo. A wave of free expression and individuality grew throughout the 20th century as a way to disrupt the power balance. They encouraged diversity of thought, even things you didn't agree with, and expected that freedom of expression would allow the "good" ideas to naturally arise.
Enter the young people of today and their perception of the status quo is that it's built on these principles of individual freedom. As they evaluate the history of their forebears and find it lacking the way that every generation does, they can't help but see the shortcomings of the 20th century. Which means being critical of absolute free speech since that was the dominant motivation of much of the actions by people in Western nations.
To be more specific, older generations entered the 20th century with women not being allowed to vote, evolution not being taught in schools, and racism being coded in the law. They saw that those things existed because social institutions such as churches enforced conformity of thought. So it was progressive to insist on greater personal freedom. Young people today entered the 21st century with climate change, poor mental health, and systemic under-the-table racism. They see that those things exist because of short-sighted individualism. It's progressive now to insist on greater social awareness.
In other words, if kids today were taught "think globally, act locally". You could say that the previous generations grew up with "think locally, act globally".