I can't use Signal anymore, by Open Whispersystems' choice, which means I can't easily communicate with a fair number of my friends anymore, and that's apparently just the way it is. Open Whispersystems demands that I let Google have a level of access to my phone I don't want them to have, or they won't let me use Signal. Their proprietary Signal software is the only way to use the Signal service, so I can't just switch to an app whose privacy characteristics might be a better fit for my needs, as no other apps exist.
Am I going to convince everyone I want to communicate with that they should stop using Signal and start using something else? No, I am not, because why would they do that? They're all happily using Signal now, and I'm the odd one out, so I lose. Sure feels a lot like lock-in; I have no good choices here.