The idea that Stephen A Smith is going to suddenly start talking hockey if ESPN lands the broadcast rights is an absurd take, but considering the source...
At this point, looking at things from afar, it doesn't seem like hockey is really part of ESPN's culture (for lack of a better word). I mean, outside of filling the one or two dedicated token positions ESPN has to handle their limited hockey coverage, no one is going to get hired by ESPN because they have lots of experience covering, and are passionate about, hockey.
If selling a part of the broadcast package to Disney means a game or two a week on ESPN2, where Barry Melrose handles all of the play-by-play, colour, and intermission report, and not much else beyond that, then the NHL gains nothing and should stay away. If it means at least a game a week, in a regular time slot, on the main channel, increased coverage on Sportscenter, and staffing up with a few additional people who can pronounce Anze Kopitar's name, then it starts to make sense for the league.