Earlier quoted context omitted.
What data are you referencing to claim that the vaccines do not provide some immunity? But importantly, the vaccines do reduce transmission. See the below study along with others. https://www.nejm.org/doi/full/10.1056/NEJMc2107717 Admittedly, one weakness of the above study is that it took place before Delta was widespread. There isn't a lot of data yet on how much the vaccines reduce transmission with Delta, but the…
Reducing transmission isn't good enough! If you have an R naught above one you're still in trouble. It's common knowledge that countries with highest vaccination rates have spikes in cases right now. Israel and Gibraltar for example. Herd immunity for this was always impossible.
My point is not that you're wrong, but that you were cherry picking examples and there can be numerous other reasons for spikes in infections such as relaxed measures and mask mandates, holiday season, schools re-opening, etc. It requires a more careful analysis than yours.