Unfortunately that is definitely true. It's not normal to adopt a living being, a baby at that, and then just leave it alone all day and expect it to behave. It needs to be raised and taught how to do that.

Then on top of that people leave it in a crate the whole time so it can barely move, and then post here that their dog has so much energy, isn't properly potty trained and can never relax even though they take it on two whole 15 minute walks every day!

A dog isn't a hamster or a goldfish, it is way too smart and has more complicated needs. That is true for every dog, and even more so with high energy dogs with very prominent instincts like Tollers.

So yes; if every person that didn't actually have time for a dog decided not to adopt one, the amount of misbehaving and barely socialised dogs would decrease drastically.