Note this test is about early detection, not prevention.
If your pancreatic cancer is detected early, you will still need to have your insides rearranged to get it out.
Not necessarily. It depends on how old you are, what your genetic make-up is, whether the cancer is growing rapidly, whether it has easy access to other organs to spread to (or has already begun to do so) and so on. It's not a binary thing.
The distinction with prevention is important, because we ultimately must aim for preventing almost all cancers, and not be content with anything less than that.
Disclaimer: I’m an Oncologist.
Oftentimes, doing these sorts of things lowers your insurance premiums or makes costs lower if something does happen (not always, but sometimes). These sorts of things are also generally free as it costs the insurance company less in the long run if you're doing them frequently enough.
Perhaps a bit of a misnomer, but "preventative care" doesn't necessarily mean medicinal prevention of any sort.
An entire generation of early detection might create new methods to treat it. We don’t know what we don’t know.
The third paragraph of the article says otherwise. Do you have some knowledge about this test not working?