How much money did they get from EU in last 5 years? Combine that with a lot of ukrainian migrants that actually work and open businesses you get this
A lot. About 1 percentage point of Polish GDP in 2025.
They also had a lot of government spending, with the 2025 budget deficit being 7% of GDP.
Minimum wage was raised with ~10% in January 2025.
There is an irony in people attributing it to conservatism/rightwing politics rather than pretty much the exact opposite. Spain is another example of economic growth in the EU.