Media ownership by foreign countries is indeed a worry.
Even in Holland we have this problem: 90% of the media companies (newspapers, magazines, websites) are owned by only two Belgian mediaconcerns. This is not a smart thing to do. But we never hear about that here.
Not that there's an explicit problem at the moment but such a huge imbalance is not smart IMO.
Well in this case it's not really about the fact that they're Belgian. Because unlike China there is a big separation between state and corporation here. It's more the fact that it's only two private concerns which is hardly competition.
Also, due them being based abroad the local legislation has less grip on them. The exact country they're from is indeed less important as long as it can be considered friendly.