[rdedev]

So the first link is not a study. There isn't an examination or even a reference of studies that provide evidence to the contrary. Not to say that the article can be dismissed fully but keep in mind it's not painting a full picture.

The second link is about a study that looks at transmission of the Delta variant from a breakthrough infection. It did not look into wether the chances of getting infected after vaccination decreased.

Finally the vaccine dramatically reduced your chances of dying. I'd say that's some pretty good protection from symptomatic disease, not just some protection.