I have got all my friends / family using signal, but everyone else I know and everyone else they know are using SMS or whatever. They will no doubt stop checki

I have got all my friends / family using signal, but everyone else I know and everyone else they know are using SMS or whatever. They will no doubt stop checking their signal messages from me same as iPhone users often do and I will have to change to insecure messages for all my messaging. This will break their trust in my recommendation, as much as it will break my trust in signal. I get the reasoning over this, but I think they fail to realise that interoperability is the most important feature. I will have to stop donating to signal over this change, it will be useless to me...