As someone who barely survived esophageal cancer, I'm asking politely that you at least couch these kinds of comments with "I heard, but I'm not sure" or cite some reputable source.

Consider, for example, that my spouse was pretty desperate for a miracle. She would read unsourced speculation like this and sometimes get a bit of false hope. That's not the only harm this kind of commentary does either.

That will idea will kill people. Don’t spread such crap.

Cancer is not you. It was you, but now it’s a different life form that’s eating you.

Even if it is 'you' technically 'you' that is deadly to the whole needs to be removed regardless for the sake of other 'you'. While interesting in a classification exercise the practicalities are the same regardless - a transplanted heart keeps you alive even if it isn't technically 'you' and came from another.

The eating you part is what’s important in that statement. You can’t make friends with cancer long term, only kill it or have or kill you.

A broken leg gets healed, cancer dies.

Consider me skeptical. This may describe one class or even one specific cancer, but even with relation to this it sounds very dubious. Do you have reputable citations you could provide?