I drive along Baptist Road in Bethel Park frequently, but not in the past few weeks, so I don't know about campaign signs there. (Thankfully, I missed the Bernie shrine).
But I can say that many other communities in southwestern Pennsylvania - traditional union enclaves, hardscrabble working class neighborhoods - are festooned with Trump signs and flags, and NOT Biden paraphernalia. Even the humblest little 900 square foot house in Avella, Pa., is decorated with pro-Trump stuff. It's fascinating.