I mean you're better off disabling all deceivers in transports or disabling the ability of all transportation capable of units from entering carriers than this weird random exploit rule.
If the argument is that it isn't intended by game mechanics, game mechanics showcase that transports aren't allowed in carriers so prohibit stingers from being in them.
If the argument is that deceivers are too strong in this insanely niche scenario, then prohibit them in the other 9 billion methods where they are actually way stronger.