Magna Carta 1215 versus "old laws are diminished" meme

I see this meme in articles: "Oh this very old law blah blah blah from 1797". As if its age makes it any less of a law.

Consider this:

QUOTE (gawd I miss html formatting)


Clauses remaining in English law

Only three clauses of Magna Carta still remain on statute in England and Wales. These clauses concern 1) the freedom of the English Church, 2) the "ancient liberties" of the City of London (clause 13 in the 1215 charter, clause 9 in the 1297 statute), and 3) a right to due legal process (clauses 39 and 40 in the 1215 charter, clause 29 in the 1297 statute). In detail, these clauses (using the numbering system from the 1297 statute) state that:

I. FIRST, We have granted to God, and by this our present Charter have confirmed, for Us and our Heirs for ever, that the Church of England shall be free, and shall have all her whole Rights and Liberties inviolable. We have granted also, and given to all the Freemen of our Realm, for Us and our Heirs for ever, these Liberties under-written, to have and to hold to them and their Heirs, of Us and our Heirs for ever.

IX. THE City of London shall have all the old Liberties and Customs which it hath been used to have. Moreover We will and grant, that all other Cities, Boroughs, Towns, and the Barons of the Five Ports, as with all other Ports, shall have all their Liberties and free Customs.

XXIX. NO Freeman shall be taken or imprisoned, or be disseised of his Freehold, or Liberties, or free Customs, or be outlawed, or exiled, or any other wise destroyed; nor will We not pass upon him, nor condemn him, but by lawful judgment of his Peers, or by the Law of the land. We will sell to no man, we will not deny or defer to any man either Justice or Right.

UNQUOTE

https://en.wikipedia.org/wiki/Magna_Carta#Clauses_remaining_in_English_law

So there, ageists!