I have that same rice cooker. Zojirushi. It’s pretty solid, so I’d bet whatever fancy crap it uses to tell if it’s properly cooked probably helped the way his stuff turned out
All any rice cooker does is simmer the water till it has all evaporated. They don’t have a different setting for white or brown rice. Brown rice needs more water to cook. The picture is just a lie.
Aome rice cookers absolutely have separate settings for different types of rice. Whether they do anything or are just placebo,I can’t tell you, but the option exists.

Perhaps with a lower heat setting that would take longer. Be a lot of extra tech thrown at something so simple.

Pressure cookers do the best jobs at rice. White or brown.