European elections are ongoing, and that's definitely a move to tell to pro-European to not vote for "certain parties".
You're absolutely right that if we look at the material given, for once Germany is leading the "European defence". And that realistically, moving "troops" to Ukraine will impact other front where french troops are fighting. So I am not sure which part of it is just word and whether it'll change much the big picture. That said, I can see how even non combat soldier could be a drastic change. If you send military mechanics with the tanks you let Ukraine having more combat troops and avoid long retraining of support staff.