Not really ridiculous. It can seem archaic but what it mostly is is procedural. Quite often those procedures are the result of past abuses and are there to make sure that parliament is fair, open and honest.
But we also have one of the oldest parliamentary systems in the world so the statutes are sometimes old and complicated. Remembering that parliament in it’s original form was made up of the aristocracy and answered only to the king. Later, it developed to bemore representative. Most of the rules are designed to hold the government to account.