Parliament is elected to serve the people. That is their job description in a democracy. When they stand for election, they're offering their services to their prospective employers, the people. Insofar as the government called for a referendum and asked the people to make a decision, it is incumbent upon the employees of the people to carry out that decision faithfully, as opposed to betraying the decision by not acting in good faith. And should the employees sabotage the instructions of their bosses, their sabotage is a matter of fact and
has nothing to do with emotive language. It is a de facto betrayal, in the same way that if someone hires you to clean some windows and you wipe mud all over them instead it would be a clear case of failing to do the job properly by way of disloyal behaviour, in much the same way that lying to you in order to provoke you into killing yourself would be disloyal behaviour. But you'd have us believe all this is just "emotional".