The point is Delta has changed everything. Vaccines appear to do a great job at keeping you alive but that is about it.
You are as likely to be infected now by a vaccinated person as a non-vaccinated person, perhaps even more so.
The only reason now to brow beat an individual to get vaccinated is that they are in a group likely to die of covid and you feel this individual is not gauging his risk reward properly and you have a degree of empathy.
You can catch the virus from anyone, you have to figure, but getting vaxxed is still super critical in quelling the pandemic.
Delta hasn't changed that.
It's not just for the good of the person, i.e. their health. Overburdened medical system is fucking up things for everyone. For instance, I have some things I've wanted addressed by my HMO and have put them off for over 18 months now. Beds are getting sparcer, if I needed one, I might be SOL. It's the unvaxxed covid patient who is apt to get hospitalized, not the vaxxed.
I don't know your sources of info, but I saw info suggesting that vaxxed people with breakthrough cases, while passing on the virus are not doing so to the extent of unvaxxed, or at least not as long.