My company (and i know other that do this as well) have a Tobacco surcharge. If you use any tobacco product (including vaping) there is a $200/month surcharge. Fair? i guess it all depends on your personal opinion. They also have a spousal surcharge of $150/month if you cover your spouse on insurance if they are offered insurance at their emplyment. So its not like adding a surcharge to unvaxxed is some kind of new contrivesial thing.
Sure, its easy to lie about these things ,but if they do a follow up, you will be fired.
Honestly, i am surprised my the aren't doing the surcharge for unvaxxed for us. I fully expected that this year.