For me the fact that YouTube media critics are calling out Hollywood for inserting postmodernism and 'The Message' into films/TV/video games is a great example of them noticing the so-called Breitbart Doctrine:
"The Breitbart Doctrine is the idea that "politics is downstream from culture" and that to change politics one must first change culture."
Attempts at influencing culture and at creating political change have been a feature of television and film in some form or other for decades but in recent years film and TV (and video game) production companies have gone all in for EDI, and social justice, and that has had a huge affect on the type of media being produced as well as on the choices of people who are given the opportunity to produce media - so many actors, producers, directors, writers, game designers describe themselves as activists these days.
Hollywood executives are very open (when attending business summits) about the fact that they want to change viewers' minds, that they see themselves as having a social responsibility to use their influence to change culture, and that achieving positive EDI-related ESG scores are very important to their companies when they need financing for their media products. And when it comes to an example of media and politics influencing each other directly, the Democratic Party politicians in California have implemented legislation that imposes strict EDI quotas and requirements for all media made in the that State.
So I see your argument but I disagree that these complaints are solely made on the basis of the critics feeling alienated or isolated from society, or on the basis of them disliking touchy-feely content. I think they're noticing and drawing attention to the more overt political messaging that is coming from one side of the aisle, via the deliberate change in nature of the media landscape, and to the fact that this is being reinforced by legislative changes such as those in California and the changes at the Federal level to legislation such as Title IX.