@aj0413, etc.
There was a very specific reason why I had Kresky define what a hybrid build is. Based on the definition then the arguments provided can only apply to that definition - in essence, it's a thematic definition. If we change the definition to the ability to deal both physical and magical damage then stats do matter because they affect ability damage and it becomes balancing out your 'native' i.e. primary with your secondary sources as well as balancing our your skill points and memory.
Having hybrids exist by ability alone is perfectly fine, there just needs to exist abilities that facilitate that.
A lot of other games generally have things like 'arcane strike' or some way to deliver a spell with a melee strike but those abilities do not exist.
Also, warfare is pretty critical for hybridized damage; it's an easy way to convert magic damage into physical. Unfortunately, there aren't really any abilities that convert physical into magical. Also, non-trivial damage, e.g., crippling blow, overpower.