The title makes it sound like Rotten Tomatoes deliberately did something shady. What actually seems to have happened is:
- Rotten Tomatoes aggregates critic reviews. As far as I know, those critics aren't really affiliated with Rotten Tomatoes.
- Some of the critics that make up that aggregated rating got bribed to increase their evaluation of the movie.
- Consequently the score on sites that aggregate reviews like Rotten Tomatoes increased.