Ok, I promised myself I wouldn’t post about this again, but you have so spectacularly misunderstood what I wrote I’ve got sucked back in, idk, maybe you’re just trolling, but I shall try to explain one last time.
Of course the GFA is not hundreds of years old, it was only signed in 1998, indeed, I would argue it did not become a reality until Paisley signed up to power sharing in 2007.
The point is, that this was a solution to a problem that goes back to the plantations of the 1500s, probably the first and definitely the most significant step in a positive direction in nearly 500 years.
The notion you seem to have of “ hey, the GFA is over 20 years old, let’s rip it up and make a new agreement, it’ll probably be loads better” demonstrates you have no grip on what a truly momentous thing it was/is. Both republicans and loyalists have had to accept massive compromises. There is no better agreement to be made, it either works or we’re back to the bloodshed and misery. The only people who could possibly gain from this are those from the loyalist and republican movements who actually thrived off the violence