I love how they move guys around and get guys into the lineup who didn't start that day. Your best players will perform better when they are rested and healthy. I think Wong has won the starter's job, I'd still like McGuire to get a lot of games. Wong's emergence + McGuires past + an unreasonable amount of faith put into CERA have built this ideal around here that Reese isn't a good catcher. It's quite the opposite. Also, Wong is so good in other ways you don't see with a catcher with his speed on the bases, that I think he can actually be a better player when he gets a reasonable amount of rest. I think he's earned that role to start but I'm very comfortable with McGuire being his running mate.
Obviously managing the roster it Makes sense to start McGuire vs. RHP and Wong vs. LHP as best you can, but there's no way Wong should sit vs. all RHP, he's your starter. Maybe Reese gets 40-50 starts this year and those should mostly be against RHP, in a perfect world, it would be. But this is not a perfect world and there are other considerations such as who a pitcher likes throwing too. I think Wong is earning that role.