Yes, it's all quite fragmented still on the STEEM blockchain. This has its advantages around innovation and experimentation and will no doubt consolidate down into a few core 'entry points' to the blockchain over time.
The prob in the meantime is that it does lead to confusion. I am still not actively promoting or sharing Steemit to friends or family as I know they will likely get bogged down after a few weeks and leave - then the chances of getting them back will be next to nil (no matter how much more improved it might be in the future).
On the bright side, I sense we might be getting closer to a more solid and user-friendly blogging front-end e.g. from Busy to Steempeak to Partiko etc, they seem to be getting better and better.
The dream is that some talented devs here on STEEM come up with a new interface/concept/experience that is a step up from what's already out there in the social media space and that folk choose to join unaware or unconcerned that it is built on a blockchain called STEEM. In the same way that I doubt that the masses care what software coding underpins FB or Instagram!