BPIP doesn't show temp bans.
Ok, did not know that.
Modlog does not show temp bans and signature bans, so that is why BPIP does not show such information on temporary bans and signature bans.
Yes, it is fair because only good users, with good net-effects will have chance to get temp bans & signature bans as alternatives of permanent bans due to plagiarism. So, it's true that there are limited cases will get such chances because there are unsignificant users get good net-effects. Even they are good net-effective users, if they did plagiarsim from time to time, their chances will be reduced.
I said that the punishment is not fair if a temp-ban has also not been issued and it's just limited to signature ban. I was always for a temp ban and signature ban instead of a permanent ban if users have done this years ago and only once. The others who have been doing it in the past and even now deserve the perm-ban.