I don't want to watch relievers put guys on base, but Gomez had 37 saves in 43 opportunities last season, and none of blown saves were in the same month until September (when he had two). In terms of saves, that's a perfectly reasonable performance. Kenley Jansen had six blown saves too (albeit in more opportunities).
What I like about having Gomez as the closer is, yes, saves are dumb and your best pitcher doesn't have to be the closer. Should he ultimately be pitching in the highest-leverage situations? Probably not, if his stuff isn't working. But a three-run lead in the 9th with no men on base isn't necessarily high-leverage. Which is also why even the best closers put guys on, depending on their repertoire they are pitching to contact or trading walks for strikeouts by design.
On opening day though, I'd say he's just rusty, and his stuff does have to be perfect. Anyone remember the bullpen a year ago today?