Let’s go through this slowly. You asserted that the Rema is a source for not listening to rabonim if they would argue with the lay leaders. The Rema says no such thing. He simply states the binding nature of a community-led decision. He does not say that the community need not defer to any potential rabbinic involvement.
Also, bringing proofs from sources that are from your community, which do not hold of the concept of DT, is like a christian missionary bringing proofs from the new testament. I do not know the position of R. Kook, but some one-sentence overview of what you think was his approach is not goingto do much for me, all the more so when his seforim were forbade by the chazon ish. R. Soloveitchik was greatly influenced by his time in the hotbed of german intellectual haskalah, which (surprise?) despises the idea of deferring to authority in general, and certainly that of a religion.
For the record, it is ridiculous that you bring a proof from reb Moshe. He said often(see the artscroll reb moshe book) that those who do not believe in the concept of DT, and who think that rabonim are only there to answer shailos in halacha, and not run klal yisroel, are not part of klal yisroel. The chazon ish writes similarly that this is the ‘shitah yeshanah of the haskalah’ (this is in igros chazon ish)
So, you brought proof from both those who oppose you, and those who are, well, you yourself.