Senior management doesn't like it, in my experience. But I agree it makes sense for many interactions.

Not everyone will appreciate your authentic self, that's the inherent risk which requires bravery to overcome. It might also be simply not worth the risk, but either way you should act in a way that you can respect. There are things I wouldn't do because I consider them too risky, but I can still respect myself because I'm the one making the judgement call. It's when I act inauthentically because of the fear, not the risk, that I lose respect for myself and I do my best to avoid it.

The legal fiction that is the corporation is the antithesis of authenticity, and the brand they invest so heavily in, its mask. Having an authentic employee risks removing the mask.