That's what I do use, when a phone number is needed. The only placed that seemed to notice was OpenAI, but my GPU has 16 GB of RAM, so I run all my inferencing locally, using open models, which is a good idea anyway.
The bigger problem with Google Voice is that Google's email gateway for SMS is awful. It cuts off outgoing messages after two carriage returns, strips out single carriage returns, and won't send me group messages, instead sending me a link to the message, and even that only rarely, usually not even notifying me that I received a group message.
I've found a few alternatives, and I wouldn't mind paying a few dollars a month for one, but every one I've looked into requires I upload a copy of my photo ID, and I'm definately not going to do that.