How does your coach approach promoting students to the next belt level?
Do you think he takes it too lightly? Or is he too strict when it comes to promotions?

Well, Kron Gracie appears to be more on the stricter side.
Here is what he has to say about losing students because of not promoting them:

I’ve already lost students in the past because I didn’t promote them.
I’ll promote them when I think I should.

It has nothing to do with asking for a promotion.
It does not change anything, it’s just a demonstration of their progress.

But what about when a student who already has some experience comes to train?

In my gym, there are guys with blue belts for five years.

When an athlete comes from another team, he wears a white bar on his belt until I think he deserves that belt.
This is to show that the belt can not be treated as a sandwich, that you pick up and drop when you want.

Gracie blames the “money game” for handing belts too fast:

Unfortunately, I can not do anything. I do not own the world, I can only control what I do.

Jiu-Jitsu is a martial art.
You need to put your blood in the gym, hang out with your teacher and earn the belt.

It’s something you do not get with time, experience for money and friendship.