Perhaps I was unclear.
The first three paragraphs do address well-established facts. Since they are well established, we do not need to strike them. We can leave them there; they will do no harm. If you feel that clutters the bill, that is not that serious.
However, the fourth paragraph is useful because it gives us information that explains the purpose of the bill. If we strike it, we no longer know the bill's purpose. You and I know it, all our colleagues and the people in this room know it, but, in 10 or 20 years, people will have to refer to the proceedings of this committee to know it. If it is in the preamble, it will be clear for all Canadians, not just for legislators.