To Dub or Not to Dub in Musicals

So today I read an article from Vulture about the need to go back to dubbing in musicals. It used to be a standard practice for studios to dub over an actress if they did not feel their singing voice was up to snuff. At the same time the person actually doing the singing often did not get on screen credit for their effort. Now a days we are seeing times where an actor was cast in a part even though their singing voice might not have been the best. There are plenty of times that I have been disappointed in the casting choice due to the singing voice. At the same time a few bad choices does not mean that we need to go back to dubbing over voices. The article in particular seems a little bit overly critical of people who are mainly actors and actresses who do their own singing.