In real life only a very small percentage can be labelled total 'goodies' or 'baddies'. Most fall in-between the extremes.
For example a group could do a good thing like arrange a trading block where members can more easily export/import and thus increase their prosperity, but behind it that same group may try to dictate to the members and force them into a single entity that they can control as top level government, unelected.
The thing is to sort the good from the bad.
In this case the EU is steadfastly refusing to budge on demands that they have made no reasonable case for, and refusing to accept solutions to problems they themselves have created. So at the negotiation table they have opted to take on the mantle of the 'baddies', yes.