Is it possible, using any workarounds, to set up my account to automatically record ALL Google Meet meetings? I need them all, but there's no conceivable way to make everyone hit that record button.
I don't think there is any option, even via a workaround. App script or the APIs can't enable it. I would submit a feature request. If voice can enforce recording, I could see it being an option for meet.
If you do not already have access, you need to request it first. See https://www.googlecloudcommunity.com/gc/custom/page/page-id/Workspace-Feature-Ideas-FAQ for how to do that.
Once you have access, go to https://www.googlecloudcommunity.com/gc/Feature-Ideas/gh-p/workspace-ideas-group . There, you can upvote and comment on any similar idea, or post a new idea.