Yeah, though I don't really understand your privacy/security model. If you are worried about being targeted directly by Google or some three letter agency, you certainly should not use any of this technology. Instead, you need to go back to the basics, to something running on a physically segregated network, with a much smaller attack surface area. If you are just worried about being dragnet tracked, you are way better off with Jitsi than Zoom even if you end up using Chromium to connect to the session.