I feel like the essay has some really good points about the "dumbing down" of film criticism and especially the armchair enthusiast mindset of so many Internet self-deluded legends. I hate the focus on production stories, box office numbers, and God forfend Rotten Tomatoes aggregates as much as anyone. I think he is unfair to Ebert and others, though; I mean, by the standards of what passes for film writing today, Ebert is actually a force for critical good. He may not be going Kael-level deep but he does engage with the movies on their own merits and discuss how well they accomplish what they set out to do, rather than just summarizing the plot, rating the CG, and calling it a day.
I dated a girl for a few months and whenever we went to see a movie I would try to talk with her about it and she couldn't say anything except she liked it or she didn't like it. I think there's a lot of people out there who say they "like movies" but are just totally film illiterate when it comes to dissecting what makes them work and why.
I also think the author's continual name dropping of other movies which you better like or else you're an uneducated philistine significantly undermines his central point. He wanders away from "nobody is doing good film writing these days" to "nobody likes all the movies I like, which are the best movies" rather quickly.