Anything that doesn’t genetically target cancer cells is just not the solution long term. Any progress is good though.

Literally reactive oxygen species targets cancer cell DNA. We are taking advantage of the unique chemical environment of the inside of a cancer cell and using it to generate oxygen in a double-whammy to destroy itself.

This is perhaps the best targeted method devised as it seems to collect basically entirely in tumors. Chemo and Radio therapy just aren't that targeted.