Suggesting that the two sides have the same motive, goal, and methods is a criticism. Suggesting that they are both full of whining dogmatists is a criticism.
Here is your argument, since apparently you didn’t get it from the much more brief sarcasm that started this little chain: “it’s shortsighted and frankly ignorant to suggest that destroying the most powerful country ever to exist via secession is a reasonable idea just because someone is butthurt that their ‘side’ didn’t win an election this time around and we had some hurricanes and fires this year that required significant federal disaster assistance”
By the way, my argument doesn’t change if it’s republicans talking secession or if the democrats are doing it. It’s a stupid idea.