[moomin]

You're right, that's the argument. It ignores the fact that the position makes no sense. In the UK, most laws are made by civil servants, under the direction of ministers, within the mandate of parliament. Under Brexit, this function will grow, not shrink.

Stephen Phillips, a prominent and heavily Brexit-supporting Conservative, appears to have figured out that Brexit means a huge increase in executive power, not a reduction. He's resigned from the party. Sadly, he appears to be alone.

In practical terms, the amount of legislation a modern country needs is far in excess of what its elected bodies can deliver. The question isn't if someone other than the body should be legislating, it's who, and with what oversight.