I dont think that is true at all. The data is pretty clear that lifespan is significantly increasing.
>Over time, the mean overall survival has improved from two months in 1973 to five months in 2015. Regarding long-term survival, a clear rise in 2yS is noted, increasing from 2.6% in 1973 to 12.9% in 2013 (latest year of which 2yS data can be calculated; Figure 1 and Tables 1 and 2), occurring mostly after the mid-1990s. A more modest increase is seen in the 5yS, from 0.7% in 1973 to 3.2% in 2010.
>https://www.researchgate.net/publication/348455938_Long-Term...