I don't buy it. First of all, the class system is about material interests - real physical tangible interests - and not about feelings. Even if 99% of the people live in a world of ideas, the ruling class, by virtue of the fact that they have to bargain over laws (multi hundred page documents that decide taxation and allocation as well as employee and business rights), live in the world of the material.
The American populace lives, and probably since at least the mid 20th century has lived, in a world of ideas. By this I mean, the country is torn asunder by feelings about abortion, race, gender and so forth, immigration [edit: and also celebrity-lead culture] -- all issues that, guess what, don't even touch the interests of the .01%.
#MeToo poses no threat whatsoever to any class system.