Nothing wrong with using both to earn, so long as you are providing good content and people enjoy it, that's what matters and as you said, one is more for blogging and one is more social media based.
I am waiting on international release of ONO to use it myself, but I plan on supporting both through their use and frankly, just happy that doing things most of us normally would do is rewarded based on what the posts are like.
Yes @thegoliath! I agree, as long as we enjoy reading each other's contents, it doesnt really matter which platforms they are posted on.