I always associated it with political content so that for sure tracks. I just listened to @jack on citadel dispatch and he made the point that nostr needs more communities like artists and such, I think it's the same observation wrt rumble -- critical mass of varied interests needs to hit.

Without a doubt. I think the key difference for me though is decentralization. We can use it without asking. Not rumble. In time, we are growing. Slowly.