People are people wherever you go, but the motivation on Hive can be different. Of course some will only care about rewards, but those who are into a topic will comment anyway. Peakd says Feathered Friends only has 117 active users, whatever that means, but that ought to give you more responses than you say. I can see most posts there get some comments, so I'm not sure why yours didn't. It is a broad topic, so that may be a factor.
I comment a lot and there will be posts where I'm the only one despite the content being good. So it is an issue in some cases. I am sure you know that posting about Hive tends to get more responses, but any topic is valid. I think there are only a few thousand users across all the communities, so they can be spread thin. I don't really rely on communities so much though.
Those who don't comment are likely to miss out as they will gain less followers.