And that's not going to change until they start dubbing actors, like they done since day 1. The problem with that is you can't hide it anymore.
While, I'm sure a lot of people were able to guess that actors in the heyday of movie musicals were dubbed, there was no Internet to offer any evidence or spread rumors about that.
Some audience members were able to look past the fact that it wasn't the actor/actress doing their own singing. I'm sure that still holds true today but I feel like the vast majority would judge whomever is being dubbed as not being right for the part.
Why should the Hollywood actors and actresses get that crutch? It's certainly not that way on Broadway. If you have an A-list star come in to do a Broadway musical, no one is standing off-stage singing for them while they mouth the words. Yes, keys may be lowered and tempos may be changed to suit that person, but at least they're giving an entire performance.
Personally, if I was seeing a movie musical and I knew one of the leads was lip synching to another person's voice...I would find the performance to be less than genuine.
And, I certainly don't think voters on Awards committees would even consider those actors/actresses. I think a lot of actors know this. Hopefully they're not taking parts simply for the chance at an award but I'm sure it's in the back of their mind.
That's why I feel like it takes a serious amount of convincing to get big names into these films. Some of them may want to do it but they feel they're not a good enough singer/dancer/what have you. They know if they are dubbed it won't be able to be kept a secret and they want to spare themselves the media judgement that they simply weren't up to par for the role altogether.
I believe that's why a great deal of them choose not to do it. They don't feel it's worth the risk.
"I love talking about nothing. It is the only thing I know anything about." - Oscar Wilde