Different denominations have different traditions. Christianity is not a monolith and has split many, many, many times.

My experience is that the more separated the church is from the oldest denominations, the less likely the priest or pastor is to wear "traditional" garb. The church in the picture is some flavour of southern evangelical, and so is pretty far removed from Roman Catholicism.

I grew up in a reformed Calvinist tradition and the pastors always wore suits. In later years, younger pastors would even ditch the jacket in the summer.