People don't get elected to our Parliament because they have brains.
They get elected because they've found a way to persuade enough people to vote for them.
They don't, in general, care how they do that, but for sure it doesn't involve telling everybody the unvarnished truth. That's the path to sound defeat in the polls.
And it really doesn't matter, except, perhaps, to me and the dozen or so other principled people on the planet. But in the Grand Scheme of These Things, we don't count at all.