@nugger @synapsid Gaston supposedly modeled the glock angle off of ergonomic studies using non-shooters. He wanted to find the most natural pointing form for the default, inexperienced, blank slate human.
Add in the european tradition of highly raked grip angles - the luger was prized by literally everyone who ever beheld one - and it makes sense why it's so raked. Like any big split it's controversial because people accustomed to one set of muscle memory whine that they have to develop a new one for the second.