I don't see the problem with Steemsports but I can see that from a marketing perspective it may be beneficial to spin it off to a separate APP like Busy that uses the same Steem Blockchain.
That would also protect Steemit against any negative blowback from regulatory issues or just public perception.
We can also then market that separate app more appropriately and essentially get the best of both worlds.
Right now having it mixed up with the blogging may act to confuse people.