"Ok... that immune systems only work "up to a point" on new variants, the same applies for the vaccine. It will only work "up to a point" for the delta variant"
Correct! And that is EXACTLY what we have been seeing. Variants are dangerous because they undermine the efforts to make a vaccine, but fortunately so far, vaccinated people have been receiving some protection from the delta variant, in terms of both how easy it is to catch it AND how fatal it is, when compared to the completely unvaccinated entirely. Up to a point, it protects us. And for a new disease that's killed 4 million people worldwide, that's enough to make a difference, and it would even make the disease endemic (no longer pandemic) if only everyone would vaccinate themselves like we've been asking the whole time.
Then this can all end and you can go back to writing whatever claptrap about not trusting the government you want to.