I've suspected too that many of the bent forks pointed out ...aren't.
Yup, me too, however; vintage road bicycle frames are pretty fragile, when compared to most other bicycles genders.
Thanks for your input, rootboy. I suspected it had something to do with the lens but am anything but an expert on taking pictures. I would, however; like to improve my skill level so that I can better share my images with others and, perhaps, hear a bit less about bent forks.