2018: The cause of US withdrawal enjoys significant support from everyone in Germany. They think the Yanks can't leave soon enough. "They shouldn’t be allowed to fight their battles with Russia here. Far from ensuring Europe’s security, Uncle Sam is much more likely to draw it into a war."

https://www.independent.co.uk/news/world/europe/us-troops-germany-public-opinion-pull-out-nato-summit-merkel-a8442021.html

It didn't start with Trump, either, here is some context from before Trump took office.

https://www.atlanticcouncil.org/blogs/natosource/nato-publics-reluctant-to-provide-military-aid-to-allies-under-attack/