We dont know the full story and we didnt hear anything back from poorbot owner.
If he spend his own balance and money from other people than I dont see any problem with that.
I dont know how I would react in his situation but I wouldnt be happy with stake announcement.
Yes it is not a problem if what he lost is fully his own money but if there are also some money that he should send back to stake's users. No valid complaint until now against poorbot, tried to find information at Stake's dedicated forum but seems that there is no post about poorbot to. Hopefully no one is affected by what was done by poorbot or in other word is that poorbot lost all his money only.
I think that can be the only explanation why stake has offered any complains about the issue, because if some of the funds lost were actually tied to stake users then I think by an accusation or some sort of thread would have been actively waiting on for discussion but for now everything seems numb and if actually the money is all poorbet funds then I think he is okay to go.