People listened to what you had to say, took your arguments seriously, and explained why your arguments are wrong. They explained why your spreadsheet math doesn't take into account so many things that affect game balance. Your arguments were not misunderstood or mischaracterized. The explanations they gave you contain a lot of insight that you could use to improve your play and get your rating up.
You don't want people to take your arguments seriously, you want people to take YOU seriously, even though you haven't done the work to get even 1000 rating let alone 1500 rating. People who are rated 850 should focus on improving their own gameplay, not on trying to change the game balance. It's the wrong attitude.
The game cannot be balanced around anything except the reality of how high-level players play. You can't balance the game for 800s or even for 1400s. By definition, people who are less than 2k are messing up. If you try to change the game balance to help 800s do better against 2ks, you would end up changing the meta, but the 2ks would still dominate. With the change in meta, there would be new ways for 2ks to flex on 800s. Good players take advantage of opportunities available to them, and weak players make mistakes. Changing the balance won't change that fundamental truth. If you dumb down the game to where there are few opportunities for interesting play and few opportunities for mistakes, you could make a game where 800s have a better chance against 2ks, but it's not a game that anyone would want to play.