In this study, mRNA boosters were highly effective against infection with the delta variant but were less effective against infection with the omicron variant. However, these boosters led to strong protection against Covid-19–related hospitalization and death due to both variants.
We vaccinate in order to prevent severe disease, hospitalization, and death. The original vaccines, per the link you shared, are extremely effective at this.
There seems to be a pervasive thought that our leaders ought to somehow become superhuman and obtain clairvoyance about how to solve any problem we have. They are no different from any of us, who think a bug has a simple solution before we spend a lot of time figuring out more complicated things were happening under the hood.
The new information, that the world is globalized, with many countries not being able to afford vaccines and also many militant anti vaxxers around?
How was wiping out covid, a realistic goal in the first place?
Similarly, a lot of people have been claiming we're evilly withholding patents from the world, but that can't be a real issue or China and Russia would just have stolen the IP from us. They literally can't produce them any faster even with the rights.
The conclusion said it is less effective.
The messenger RNA (mRNA) boosters were highly effective against symptomatic delta infection, but they were less effective against symptomatic omicron infection. However, with both variants, mRNA boosters led to strong protection against Covid-19–related hospitalization and death. (Funded by Weill Cornell Medicine–Qatar and others.)
Don't get me wrong, I believe in the vaccine, but I think we are still far away from one vaccine that kill all the the mutations.