No, here you probably don't want bishop at all, unless you need to make comeback with feodum and bishopping lot of silver to reduce first player lead. Also no throne rooms.
Bishop here only helps opponent. If he didn't waste time with buying bishop and 4 native villages and bought silver instead then cultist-bm should pile provinces by turn 20, not have 3 provinces at turn 23 despite having only 2 junk and trashed junk from your bishop.