Mediasoup multi host

I develop a feature for my application about conference room, absolutely in production i have to scale this application on many instance. So i read some docs, articles, forum
this article: mediasoup :: Scalability and https://i.imgur.com/jJt3Mz9.png

Example: Room 1 have 5 participant total, 1 for instance 1 / 2 for instance 2,3.

For One-To-Many Broadcasting part, instance 1 must be create 2 consumer for instance 2 and 2 consumer for instance 3, it increase consumer for instance. But every worker can handle over ~500 consumers only. Did i though right?