Most of these points are irrelevant to the point that was made by the commenter above, that claimed that Germany was not forced into the Euro, but wanted it because they saw it in part as a means to take away devaluations as a tool of other EU nations.

I don't know if that's true or not - I didn't follow the debate that closely - but the arguments you are giving here are either besides the point for that kind of decision, or seems like plausible concessions of a party that sees itself as strong enough to be able to win big if devaluations are taken off the table.