The system starts from the impartiality of the judge
What if judges are blatantly partial, politicized and corrupted as is the case in Poland? In all they're running amok as they are practically untouchable in the current system.
The guilty of treason is a public figure and his guilt there for anyone to assess for themselves. As to his other transgressions of the criminal nature, those should be judged in a court of law.
It is more subtle than that
Nothing subtle about it. Lefties believe in democracy as long as it works in their favour. If it doesn't it is populism, fascism and issues too complex to be handled by the popular vote.
The only 'subtleties' in all this totalitarian lefties nonsense is the way they try to sell that BS to the people.
Opinion polls show a majority want to stay in the EU
I wouldn't put any credence to the polls in general and especially in Poland. If you think about TVN poll, that is clearly just a propaganda spin.
My take ( I clearly say it is a guess but an educated guess that includes intimate knowledge of the Polish people) is that about 70% want Poland to say in EU but not for any price. On the other hand 60 to 70% blame the EU for the all those happenings.