Sorry I should of been clearer, by worse I mean the virus living in more hosts. Not worse for us humans.

I agree on the vaccinated Vs unvaccinated life point.

Does that not depend on how the R number is calculated? Sure less people will be showing symptoms so less tests and less positive tests. We will not however know the true never of people carrying the virus. The R number may be growing after vaccination however we just don't show symptoms.