You really shouldn't leap to conclusions like that, you're bound to fall flat on your nose. I can think of multiple other explanations.
- The topic of Plato may have been hashed out elsewhere (somewhere in those other 27,000 posts), and people aren't interested in talking about it again.
- People simply don't care enough about Plato to debate it.
- Perhaps many there have reached the same conclusion through examination of Plato's works.
As you can see, there are many possible interpretations besides your default negative "they're just puppets" explanation.