YES!!!! I even brought it up when I dropped off my vehicle for the transmission issue. I am pretty certain they never looked at it because they were so focused on the bigger issue/fix. Mine only sing in reverse too. It’s going back to the dealership in early March because I’d like to maintain my ear health.
I sent a message to Toyota Canada about it. Of course their first response was "Did you take it to a dealer yet? What did the dealer say?"
You’d think they would have somebody monitoring. They perhaps do anonymously. Ford used to keep an account on different models of their forums, even if the consensus was they weren’t of much help beyond making sure you’re connected with your dealer. People suspect they’re still there anonymously monitoring but without any active engagement. You’d think companies would have somebody monitoring kind of idea of how to engage on forums now on this new fangled thing we call the internet.
update: the shop refused to replace pads and rotors as they said there is no Toyota bulletin for the LC yet. They lubricated the front brakes assembly and sent the vehicle back home. The next day the brakes started squeaking again. So frustrating...
