The Steemit and Dtbube platform needs some serious work and way more users if they are going to get to the size where they can start partaking in activist activities.
The biggest issue with Steemit and Dtbube is the quality for a lot of the content is subpar. I see people sharing photos with just a title earning money, whilst people putting effort into writing great content make nothing. If Steemit wants to attract quality content, the imbalance needs to be fixed somehow or most people will just give up trying to make it work.
I see Steemit in particular as a platform that solves the problem people have been asking since ad blockers became a thing: how am I going to make money off of producing content? I also see Steemit as a platform that can definitely change the perception of cryptocurrency being used by criminals to launder money or buy drugs.
Besides the imbalance in power on both platforms, there is a discoverbility issue where it's hard to find good content, the categorisation isn't that great and content exploration isn't great either. It's another avenue where both platforms need to be improved.
You could write the best post of your life, about a cause you're passionate about, but if you don't have a following or the power, then it'll be in vain because nobody is going to see it. For any of these platforms to become suitable for activism based content, we need to find a way to make it easier to find, share and reward.