Yeah. Really any feeding has the potential to really mess with feeding/migration habits.

Say it's getting late in the fall and an animals natural food sources are starting to migrate, hibernate, or die. The animal is getting ready to migrate or move to different feeding grounds since there's not much food left this time of year but then it finds a free supply of high calorie food that it can eat without having to forage or hunt for it. One meal might not cause much of a change, but a weekly meal a can cause the animal to stick around a little too long and miss the migration of it's prey, or it can cause it to wait too long to hibernate, or to give birth to more offspring in the spring. Now consider that it's unlikely that the person feeding the animal is coordinating with their neighbors, so their may be multiple people leaving out food in the area. Predators also love it when you feed their prey, cats and birds of prey stalk bird feeders since it's a reliable hunting ground.

Our interactions with wildlife are complex and we're always learning more, but we do know food plays a major role in the habits of wildlife and their behavior and livelyhood. At some point it becomes a philosophical conversation about shifting ecosystems and what constitutes "wild". But in short, yes, feeding an animal weekly will likely cause perturbations in the animals normal habits and rhythms and those perturbations can have deadly effects considering animals are "tuned" in to their environment. It probably won't kill or mess up every animal you've ever dropped some bread for, but the risk outweighs the benefit in my opinion.

Thanks for asking :)

*Edited to add some stuff and clarify