I'm not seeing how this doesn't bring people in? People attending blockchain conferences seem like a receptive audience to me, potentially as end users, as investors, and as developers. Most don't know about or barely know about Steem (and much of what they think they know is probably inaccurate).
IMO this has potential to grow the network, but as with anything else I would also want to see actual results in the form of tracking metrics, etc.
RE: SPS and blockchain events