They tested 9 bacteria types. 2 reduced the cancer a lot for a while. Another made it disappear for a few days. And one made it disappear for a month, until they ended the experiment and killed the mice as usual.
Also, it was quite small, like a ball of 7mm or 1/4 inch. I'm not what would happen with bigger tumors.
So it's promising, but may be a temporal solution.
> dying a bit sooner is not that bad
It also depends on how painful it is.