Well, goalie is the most important position in hockey, just like QB is in the NFL. Not surprising there are more posts, especially when he was considered to be a reach.
But who is to say he's a reach? is there some master rating guide? Like with QBs, if you think he'll be good, you take him earlier than you otherwise would out of FOMO. Seattle was obviously looking for a goalie and might have taken him just a few picks later, leaving the Sabre without (the-rated top one).