Don't have non-vaccinated people less risk of dying as a baseline ? (because if they are against vaccine, probably they statistically have less comorbidities, o

Don't have non-vaccinated people less risk of dying as a baseline ? (because if they are against vaccine, probably they statistically have less comorbidities, otherwise they'd take the vaccine). If this is the case, then it would mean the vaccine is even more effective than it seems.