Westboro is not a church. It was formed as a vehicle for Fred Phelps to further his bizarre ideological agenda (Leftist). He was a player during the Clinton/Gore years, and was considered a Friend Of Bill.
He and his family gained traction (and revenue) as useful idiots for the Agenda, pretending to be a fringe of the hated Religious Right and giving the Leftists a target. His progeny fund their protests through ambulance-chasing and grants from OFA.
Absolutely right. That is why I put Baptist Church in air quotes.