I'm betting it will not be one account one vote. He'll stack the deck, just wait.
Even if it is one account one vote, the bot armies will be there to ensure the outcome the admins want. Moderator puppets to do the will of the admin team, fuck us pleb slobs that are the community and make his shitty site worth visiting.
Rather than delete posts, I propose all rexxitors instead edit all of their posts and comments to say that they are leaving reddit for good to go to the fediverse instead. Such edits should provide links to major Fediverse sites and getting started guides, with advice for other redditors to abandon that place and join us here.