There are a lot of cases where the people eating them were not the ones that foraged, but were fed them at a meal at someone's house. Further, there are reports of immigrants accidentally eating poisonous mushrooms in the US, Europe and Australia because the poisonous ones bear a resemblance to otherwise safe mushrooms found in their home countries.

Finally, you have to a be a little cold to think someone deserves death because they ate something unknown to them to be poisonous.