It does cite sources, however, many times I have tried checking sources only to find lackluster support for the statements being made in Wikipedia.
Just today I was looking at this page: https://de.wikipedia.org/wiki/Rigaer_94
It states, that the building in question was given to a Jewish organization, linking to 2 sources:
1997 wurde das Haus an die Jewish Claims Conference übertragen[2][3]
Looking at the sources, they just seem to claim that the building was once owned by a Jew. This explains why it might have been given to that organization, but it’s no proof for the statement being made.
I found several things like this over the years. I’d say this is a good 10% of the sources I bother checking.
Maybe German Wikipedia is worse somehow?
All that being said, I do trust Wikipedia mostly. I’m just saying, it’s the bare minimum IMO.
It was worse then, but the foundation of that argument is still a concern today. It’s pretty good, and I mostly trust it, I’m just saying it’s not perfect.