If you learn how to regulate the pressure you're putting on it the rear brake can become 35-40%.
One thing you learn from motoX is not to use the front excessively because it can cause lowsides too easily, you use the rear so you can come in hot and brake hard without crashing.
It's a good skill to have as well, any time I get into gravel I swap to using the rear primarily while just lightly assisting with the front because these damn sportbikes have way too strong of fucking front brakes for gravel and other loose shit :lol: