The 1st and 4th listed are the only real strategic options. The inner 2 are tactics for persuasion to 1, since that’s obviously their stated goal, but it completely backfires by reinforcing the perceived problem rather than either ignoring it or addressing it with a conciliatory measure.
Discussion
I doubt that persuasion is the goal of the letter. The PR will get merged. The letter explains why. People who agree with its contents and the majority of people who just don't care will keep running Core and touching grass. The Knots runner were already lost anyways and will keep decrying the death of Bitcoin or whatever.