I would disagree and agree with that.Goal number 1, it must fit the shooter.
Kind of depends. If you are new or highly adaptable, it may not matter. It doesn’t matter much to me.Grip angle is a factor to consider when purchasing a hand gun. For instance most glock handguns have a 22 degree angle while smith, sig, CZ, and springfield have a 18 degree angle. I love my glocks, they are virtually indestructible but I carry smith because I can get on point faster.