Nothing wrong with arguments, so long as they aren't quarrels.

No disagreement that "this is the way we are governed" in England at least, and to a lesser extent for the other parts of the United Kingdom, where the devolved administrations aren't based on the same strange system.

The term "mandate" is one I dislike, because it tends to imply that governments act in accordance with their electoral manifestos, which isn't generally true. And I do not accept that it can ever be true to say that a government reflects "the popular will" merely because they succeeded in winning a parliamentary majority.

For example, the present government has a majority which is based largely on the fact that many people voted deliberately voted to keep out the Tories.

That doesn't mean it isn't "legitimate" - but it should mean that they should claim ti represent majority opinion, unless in certain circumstances they can demonstrate that that is the case.