There is only one excusable thing about Götze's move so far, and only one thing that can make it redeemable; respectively the fact he'll get to work under Guardiola and the apparent fact he's a fan of Bayern.
I certainly don't think Guardiola is any better than Klopp as a coach, but there's certainly a mythology about him now that means players will be keen to work with him, much as I can imagine Kagawa wanted to work under Ferguson after both having enjoyed time under Klopp. Similarly I can see Lukaku wanting to work under Klopp and I can also see him wanting to stay to work under Mourinho. The cult of the manager, despite what poor misguided confuziz tells us as his students eat raw chicken and pencils for lunch, is a strong one.
If he was a fan of the club, then there's no explanation necessary, because that's everyone's dream and I can excuse him for that.
Otherwise, it's tactless, disrespectful and ill timed in almost every other aspect.