The shift towards emphasizing the subjective may have many roots, but one is in post-modernism, where the idea that objective truth exists is rejected, and personal experience ("lived experience") is held to be sacrosanct. As that academic school of thought got politically weaponized by activists spreading out from the university, I believe this concept got translated to "my truth".

My universe is not completely rational, in that I have some space for the mystical or transcendant in my universe, but the above is just naked subjectivity and an open invitation for bias to run unchecked through people's interpretation of the world. I think it was watching "The Crucible" (movie from the book about the Salem Witch Trials) when I realized what once you detach from the material world of evidence, many people will project whatever suits their psyche as the truth, unhindered be evidence or logic. More reading convinces me that giving great weight to reason and evidence is essential to a functioning civilization today.

I'm concerned that the woke will tear down the load-bearing columns in the basement of our national psyche, destroying the science-oriented civil society which produced the wealth and peace which made their delusions harmless when confined to a small niche. They are unwittingly leading the destruction of the wealth they hope to redistribute. All reason and (relative) objectivity is framed as whiteness, to be supplanted and dethroned in favor of passions and demogogery.

In some real way, they know not what they are doing. And yet, most of them do sincerely mean well; they do no intend evil.