Your original blanket statement "The jabs are failing the...

Your original blanket statement "The jabs are failing the real-world test." is not supported by the article you linked.

And your other statement - "The promised 95% has become 42%."

is utterly wrong and misleading.
You linked to an article , ( www.bbc.com/news/health-54902908 ) where no "promises" were made.

No promises were made and the word promise does not appear in the article.

The results were extremely positive . The vaccines effectiveness exceeded all expectations. The effectiveness in preventing infection was expected to be around 50% but the studies showed it to be over 90%.

"Before the first results, the talk was of a vaccine that offered maybe 50% protection"
.
"I don't think any of us really hoped that the vaccine would be 94% effective at preventing Covid-19 disease, that was really a stunning realisation."