IOW, the entire church was in grievous error for 16 centuries, until the Anabaptists came along. This Deus abscondicus tendency may explain why Baptistic churches are so prone to splitting, hiving off new denominations, plus a few new cults. After all, every generation needs to rediscover fire and reinvent the wheel. (hmmm ... is that why Baptist culture is an oxymoron?)
This is not a slight on Presbyterian churches. About the only thing I find wrong with them is this one doctrine-and that is saying a lot. (In fact I’m seriously thinking of becoming a Presbyterian.)
The problem with Baptists is that they spend very little time on good, solid doctrinal study. Like you’ve correctly stated, that is the reason they are prone to spliting off every few years. They’re simply not grounded.