What a bunch of manure.
1. The original virus was artificial. The folks who are talking about natural immunity are going to have to come to terms with the concept of a unnatural virus and what that means, specifically there is no reason to think that natural immunity can combat an unnatural virus.
2. There was a report out of the UK that quoted certain numbers, namely that there had been 42 deaths from the Delta variant oh, and 12 of those had been fully vaccinated. That was the first inkling offered to us of the reality that the mutations have outrun the vaccines. It will be awhile before they will find a way to be overt about that.
3. There is some popular talk on various blogs saying that the vaccines actually caused the infection. Well those numbers above say that 30 people who were not vaccinated died of this variant. This vaccine failure is pretty clear.