Vidqun,
Did you actually read that article which you posted from Science magazine?
The conclusion which that team of researchers reached is quite different from yours, as is shown by their summary (Quoted below in full, but with italics added).
While noting that the COVID-19 vaccines were less effective at preventing infection from the Delta variant, these remain highly effective in preventing death amongst those infected. Also - and most noteworthy - these researchers state that their findings support the conclusion that, to quote vaccines remain the most important tool to prevent infection and death.
This is rather different from the point of view that you are presenting, and it seems rather strange that you are quoting this report to support your case? (This research team certainly did not draw the conclusion that COVID-19 vaccines are totally ineffective and not worth the while).
In summary, although vaccination remains protective against SARS-CoV-2 infection, protection waned as the Delta variant emerged in the U.S., and this decline did not differ by age. The Janssen vaccine showed the greatest decline in VE-I. Breakthrough infections were not benign as vaccinated persons and who were subsequently infected had a higher risk of death compared to vaccinated persons who remained infection-free. Importantly, vaccination still provided protection against death in infected persons, and this benefit was observed for the Moderna, Pfizer-BioNTech, and Janssen vaccines during the Delta surge, although the benefit was greater for Moderna and Pfizer-BioNTech compared to Janssen vaccines. Our findings support the conclusion that COVID-19 vaccines remain the most important tool to prevent infection and death. Vaccines should be accompanied by additional measures for both vaccinated and unvaccinated persons, including masking, hand washing, and physical distancing. It is essential to implement public health interventions, such as strategic testing for control of outbreaks, vaccine passports, employment-based vaccine mandates, vaccination campaigns for eligible children as well as adults, and consistent messaging from public health leadership in the face of increased risk of infection due to the Delta and other emerging variants.
(Italics added)