Butler County had about 110,000 voters in 2020. Trump won by almost a 2-1 margin. No matter how well he does there it can’t guarantee a win in Pennsylvania given the cheating that will go on in some of the larger counties.
As you know, this isn't about Butler. It's the effect, everywhere else, of what happened there. It quietly embarrassed even shameless Communist dorks who had been praying for his death for years.
So I would say pressing the advantage of that window of reality is critical for winning over the electorate as a whole.