They are definitely not managing their mailing lists efficiently.

My case is somewhat different, not that I want to unsubscribe but at one point they started addressing me as Dick in all their mass marketing emails. That's despite the fact that my name is not Richard or any variation thereof, nor have I used that name to sign up for anything at Cloudflare. It began immediately after I shot down one pushy salesperson's "invitation to arrange a call or videoconference" for a product that I already told them would not work for me. Could be just a coincidence, though.