I won't vote because I cannot really say I consider myself a halfway decent singer. I did participate in some group chanting after the 8 weeks period though and it was ok. The sound was fitting into the sound of the women I was singing with, but since it was a group I cannot really say how good it was really, but I could use the pitch range the other women used without problems. I still am not good in hitting notes correctly, which in this case was not so important and I do have some issues with singing in the range of my vocal break , which did not change a lot and is sitting at a stupid place for singing (D4). I do intend to do singing lessons and participate in more chanting circles and such in fall or winter maybe, when the voice should have recovered to the 9 month period, which sounds good to me as at that point I heard from most patients that their voices basically stabilized and only small gradual changes happed from there on.
I don't see much issues with singing - my head voice is better than my chest voice actually, what can occur and I hear dthat from a semi-pro singer is that diplophonia can be an issue for some. I guess this can be tackeled with voice therapy or training, though. It seems to originate in asymmetry issues.