Well, it isn't formed as a question exactly...

You were wondering why someone would make an argument against being able to befriend the owlbear. Put another way, why would someone argue to keep to the rules? You suggested that there seems to be no reason for it. You also explained, later, that the idea behind these threads is to give suggestions and feedback.

Aside from that you also suggested that if someone doesn't like the idea that we are able to befriend the owlbear then the player can "feel free to pick any other option". Put another way, would it be so bad if Larian adds features or things that break the 5e rules so long as we have the option to simply ignore them?