They could absolutely fight the Golden Beastmen over the ruling power if they appeared in the Raging Flame Plane. Destabilizing the Golden Beastmen's power would be a very easy matter.
The thing was that on the way, Lin Yun estimated that there were about twenty thousand Beastmen in the tribe.
That number was too small. The weakest tribe of the Raging Flame Plane had over a hundred thousand Beastmen.
The number of high-ranked powerhouses could match the Golden Beastmen, but there were too few of them overall. If they were in the Raging Flame Plane, they would at best pose a challenge to the Golden Beastmen's rule, but they wouldn't be able to take over the ruling status.
But even if they only had about twenty thousand Beastmen, they would be able to easily sweep the floor with the twenty-seven humans and three non-humans.