True, but look what happened after the war in England
In Britain?
It actually happened during the war, several months before the end, and surprised many people. Churchill was seen as a hero even by the people who voted him out. If they could have had a Labour government with Churchill as PM they'd have chosen that.
It could happen in Poland though I'm not at all sure there'll be change. As you say, what people voted for in 1945 was a National Health Service, nationalisation, unionised workplaces, health and safety at work, social housing and good pensions/sickness benefit.
500+ is a vote winner and it's hard to imagine people who depend on that risking its demise.
I don't think if english Labour Party had campaigned on an anti Churchill platform
Very much so. That would have been a non-starter. People voted for affordable homes, not against a much loved leader.
I'm not sure that any of the PiS figures (or any other politician from any party) are especially revered though.