Just someone didn’t develop something dosen’t mean they can’t passionately share it. If you like a TV show and started talking about how much you like the show it wouldn’t rude for you to share just because you weren’t the director of the show.

RSS readers are great and although they have falling out of favor, they certainly aren’t dead. The fall in usage of RSS is directly correlated with the fall in the number of people reading blogs on a daily basis.