Lunging Maneuver. "Hit a guy over there, get extra damage". It's not hard.
The Champion actually has 2 decision points because it gets 2 fighting style on its way to level 20.
And, I'm sorry, but 3 decision point isn't hard and the Totems give you basically passive buffs. The Bear is basically just 'be tougher', how is that in any way difficult or complicated? Heck, you don't even need to choose more than once and simply stick to the same totem all the way though. It's more complicated to order a sandwich at Subway for pete's sake and that thing will last you 30 minutes top, you pick a totem once, at the same time you pick the subclass by the way, and you're set for multiple game sessions.
If that's 'too complicated', present it to your player without the other totems as the Bear Totem Barbarian. Nobody ever picks the other ones anyway
Also, the Berzerker exist.
At some point we gotta ask ourselves how much more simplified we can make things for people who, frankly, don't seem to care about the game at all.