It's not about being boring. Protestantism came into existence out of protest, because the Catholic church was accepting money to lower the punishment for sins.
Without this money, you're less likely to build elaborate cathedrals. But I imagine, it's also a matter of not wanting to indulge in the same gluttony as the Catholic church.

Episcopalianism is basically just Catholicism where the pastor is (openly) gay.

Thanks for the clarification - that's good to know