Yep, 2 excellent examples of Amendments gone awry. Notice I didn't mention the first 10, or the 13th, or the 24th? The sole purpose of that statement was to give OTHER EXAMPLES of worthless amendments. There is no "if then therefore" relationship.
Pick one side of the argument, not both: either an example of an Amendment gone bad shows that the 19th is bad also, or it is not. If it is not, then why did you bring Amendments gone bad in the first place?