As to the other amendments[2], 203 years is an extreme and unrepresentative outlier. The original bill of rights took a little over 2 years to ratify, and nearly all of the rest have taken under 1.5 years. The only one to take longer than 3 years was the highly controversial 16th amendment.
[1] https://en.wikipedia.org/wiki/Twenty-seventh_Amendment_to_th... [2] https://en.wikipedia.org/wiki/List_of_amendments_to_the_Unit...
From the article. 1) The 27th amendment was first introduced in the house in 1789. It was first ratified by a state in 1789 "Maryland – December 19, 1789" It was last ratified in 1992 "Michigan – May 7, 1992"
So if a hot upstart party filled both houses of the Congress with 51% win margins per representative, they can then easily pass a constitutional amendment.