And what appears to be a "business decision" could be a serious setback for the person on the other side of this transaction. Granted, as a startup founder, I am more exposed than someone at FAANG, but don't fool yourself - either way, someone wasted a lot of time and money on giving you a shot, and more importantly, they declined all other candidates. It really is such a selfish thing to do, and while sometimes you have no choice (health, etc), I didn't get the feeling from the OP that he felt particularly bad about it.
So to get back to your original question - no, I wouldn't give you a pass because you showed your dirty side in a business context. And if I thought you were dishonest, I would assume that your dishonesty extends across all facets of your life, and I would think I'd be doing my friends a favor by letting them know.