Apparently Wikileaks were given documents that had already leaked elsewhere before and refused to publish them because their purpose is novel leaks, not repeating leaks from elsewhere. That has been spun into a narrative that they refused leaks because they are biased, without much evidence.
When there are a lot of disingenuous arguments like this being made to discredit someone that turn out to be unreasonable once you dig a little deeper, like we see with Wikileaks and Assange, it generally is a strong suggestion someone is trying to manipulate people into believing a false narrative.
You know that Russia isn't happy with someone when they end up dead. If the Russian files that Wikileaks published didn't make Russia happy, Assange would be in a box right now, and not headed home.
...but when handed documents from one another foreign government refuses to publish them
and then it becomes obvious that the leaks were targeting liberal Swedish politicians facing election versus conservative candidates favored by that same one particular other foreign government...
I don't understand why people don't see wikileaks as anything other than a proxy Russian foreign intelligence operation.