Some quick numbers: 2020/21 exports of weapons from EU cointries to Russia were aroind 100 million (or thereabouts, might even include icebreakers, good luck using those for conquering Mariupol). Since February 2022 EU countries committed to send 2.5 billion of military gear to the Ukrainian forces.

I guess details and context still matter.

Context is also that Russia trained their invasion forces in a modern German built facility.

Unless said facility was build after 2014 I don't see the problem here. Not that the training was very successful as far as all that invasion business goes, was it?

Germany (along with France and others) supplied military-related stuff to Russia, even after 2014.

Under contracts signed before 2014. Seems like a detail worth mentioning.

EDIT: Which is bad reason, but at least an understandable when it comes to foreign policy. And it is not that arms exports are actually hindered by morals, all the exports to Saudi, UAE, Mexico and every other crisis region show otherwise. Personally, I think the West shouldn't export to those countries or conflict zones. The West also needs the industrial base to maintain reasonably strong militaries so, and with defense spending being a less than popular thing after the Cold War ended, exports are necessary for that. This could change so, and already did in Germany with additional military spending.