While I agree with you--in that the vast majority of people who publish code under permissive licenses actually have an implied set of "moral code" restrictions that they end up surprised people violate even though they specifically allowed such by their choice of license (implying they should have chosen a different, and likely more restrictive, license)--even permissive licenses tend to at least include "you can't take my code without crediting me for taking my code", and so I can appreciate someone being upset about that not happening.