To believe that one side is pure, misguided, emotion while the other is, in your eyes, perfectly positioned in logic highlights that you have taken your own bias to be fact at the expense of a balanced argument.
It seems that a deeper dive into the pro's of the out campaign would, at the very least, help you to understand their reasoning beyond simply emotion.
What other option do they have though? They can't go spewing democracy across the rest of the world and then iron fist things back at home.
No. The only thing they could do (and are doing) is attempt to undermine and scare everyone out of it.
- "You don't even have a currency figured out!"
- "You are not getting to use the pound, no way!"
- "You are not getting into the EU either, we've checked and got the big wigs in the EU to say as much, publicly, as well."
- "... and there'll be no more commonwealth for you either!"
- "Your north sea oil wells are drying up, you'll all be starving to death in a decade. The horror!"
- "It's a big world and you'll be in it on your own. Be afraid!"
...etc.
*PS. The above quotes are a summation of actual quotes made by the opposition.
How do you know that they are using any of your IP (code)?
I presume that they approached you, originally, to create software for them, but the idea was theirs. If they terminate a contract with you, however unsatisfactorily, they are still free to start over with another dev agency.
3 years is a long time in terms of what can be delivered in software. The system doesn't sound all that difficult to replicate.
It seems that a deeper dive into the pro's of the out campaign would, at the very least, help you to understand their reasoning beyond simply emotion.