My friend works in the insurance business. Protective Life Insurance is starting to decline life insurance applicants that do not provide proof of vaccination.
Update:
Just spoke with my best friend. We've known each other 20+ years. He indicated this is what they are seeing this on "high risk rated cases". I didn't ask for more details. But it does not appear to be all applicants.
Just called their number for a online quote. He didn't ask me about Covid so I asked him if I needed a vaccination to get a policy. He answered, "Covid is not even a question on our application. If you are over 80 years old, then we just want you to have recovered from it before we issue a policy."