Well it's nice that he wanted to give his buddies a chance. I'm sure it's very nice to be under the protective wing of the Pope. But if harm was done, if children were molested, there aren't any second chances. You go through a trial, if found guilty you do your time, and figure out what life is going to be like. You don't just say "oops, I'll do better next time" and continue baptizing kids while nobody is the wiser.
It's not a matter of demonizing him. Imagine if your kid were molested by a specific guy you know, and his boss was hushing it up. Even if the boss doesn't get arrested, it should be so public that it's effectively added to what people think of when they hear about him. People should think "oh, the Pope, the guy who rides around in the bubble car and likes to protect child molesters".
It's an entirely valid expectation. I'm sure there's a different feeling involved when it's not "some priest diddling some kid in some country".
Then again, it's also true that many popes in the Vatican's history have been such despicable, maladjusted humans that their confirmed crimes completely overshadow anything this dude could dream of getting away with.
That said, if the goal is just not funding his trip with government money (tax funds) it's pointless whether he actually did anything wrong or not. It comes down to a democratic decision as to whether the people want to allow their government to pay his fare.
As for Winston Churchill or whoever being bad, we don't like to think about it, but nice peaceful people are often not effective in wartime.