We should all consider we could be wrong in our self-typing, every now and then, even if you end up ultimately rejecting the conclusions . This is normal and healthy.
I don't know why but whenever Sol is criticized for whatever reason, people act like he is some kind of saint with some other-wordly wisdom that makes him more apt at typing or something. So Feathers is right: it is taboo to question anything Sol says. I personally find this disturbing, also disturbing how he holds himself above others as infalliable and always right.