NC, the case you cited above involved someone listening to a person who listened to a voice... and that is not what i have ever said to do. Our faith should be in Christ... and not in another person. You can take what someone else says with a grain of salt, but I would never endorse staking your life on something someone else says... NOR would I stake my own life on something someone else says.
Would you stake your life on what your own voice says? And if not, does that mean you don't have full faith in where your voice comes from? And if yes--well I would intervene as much as possible.
As to what would I have a person do? People will do as they wish. I would have others, like me, here to challenge and call out this destructive encouragement, and there will always be mental health specialists to help clean up the mess too. I'm pretty sure people have died because of voices they personally heard. Maybe the first five messages were innocuous, and so people like you were all supportive. Love your neighbor, have more faith and such. But then the sixth message could have come in with some very dangerous advice---but hey---the first five were well supported and warmly received---now this is the real test.
So I will just continue to challenge it when I see it. If I feel someone is being personally hurt by this nonsense, I will reach out the best I can---like I had to do with my friend when Satan started bothering her because hearing voices was approved in her group of believers, and nobody was there to help her realize how sick she really was.
So here is a thought. Since you have said that it is wrong to make decisions based on what someone else hears, then I assume these messages are meant to be private---between you and the lord. They aren't meant to be advice for you to pass on, or else you would have said a person should listen to what the voice says to someone else. Perhaps that is how it should be then. Keep it to yourself. Why share? The lord is not speaking to me or others through YOU, so why do you share? I shouldn't base any decision on anything that you claim to have heard, so I really don't need to know what it is you heard.