Nabiki
Quail Geek
It's not a "You will definitely experience issues," but a "You are more likely to experience issues.". There are a lot of other factors that go into it such as how long you keep them, how clean you keep them, etc.Respectfully, I have not found that to be the case.
There are plenty of wrong ways to raise quail, but there are plenty of right ways too. There is no one, true way.