Entirely fair. Fawkes is a generally great companion/tank/storage unit. The blame falls on the writers' lack of imagination (and appropriate dev time). Not to mention Todd "it just works" Howard.

edit: even if it wasn't under Todd's direction, I'm still generally annoyed with his shenanigans. More so since eventually, I will wind up playing the next TES and Fallout entries. Presumably after a year post release and on a reasonable sale.