There is an "iffy" part in the aid to Ukraine, in the sense that Zelenskiy said it's going to be destined to finance German firms building munition producing facilities in Ukraine... so it's somewhat hard to tell who exactly is benefitting from it... but that's more of an "iffy as business as usual" rather than "particularly iffy".

"foreign adversary" is poorly defined to the point where it can be anyone residing in a country deemed as an adversary

That's on purpose, and in part caused by the fact that countries have the last say on what their residents are allowed to do. Like, you can't have a private corporation in China without the CCP controlling most of it, or forcing you to save all data on datacenters controlled by... corporations controlled by the CCP.

Most totalitarian countries work like that, doesn't really matter whether a certain resident is against the regime and making an app to let people get slightly freer from it.