Who said Tizonas is old? Maybe in imaginary RP they are still upgraded but balance doesn't let showing it.
Who said their assembly is easy and understandable by simple mechanic?
I understand you protect your right to use them, but you can't blame people searching ways to regain their own rights.
But anyways, how many Tizonas you got? I doubt you would agree to lose numbers of them with each ship of yours mounting them gone KaBoom. That is if you have logical number.