Sure there's a lot of Bitcoin content, but there's a lot of non-Bitcoin content too. Permaculture, crafts & art, music, general ranting... If you find some topics specifically lacking, you can always start talking about them yourself. I have people in my follow list that never or very rarely would speak about Bitcoin. 

I agree it can be challenging to curate the feed out of any Bitcoin content atm, but imo that's a phase that will eventually pass as userbase grows.