As a foreigner in Germany, CDU is not centrist at all. Maybe you should consider how your definition of "center" changed in the last years. CDU is a right wing party, CSU even more, leaning into populist views, Afd is extremist.
I wish SPD was left. Most of its policies of the last years were pretty much the same as right wing parties.
Yes, that is what it says on the bottom of the comic. Duh.