That’s not what the article says.
There’s a bias we have that humans are the pinnacle to evolution and if evolution makes everything better over time then shouldn’t everything end up being human-like eventually?
In reality evolution just makes us adapt to the environment as it is, and to have larger energy consuming brains is not always better for survival. If it were, everything would evolve bigger brains.
Dinosaurs could have taken that step incidentally at some point in another timeline, but they were nowhere close to the traits that are necessary for maintaining a large social society.
Birdsarenotreal is a ploy by big bird to make us complacent and miss the real conspiracy of avian domination.