"…make shit to them"?
Not so many leaps. The scans can't yet detect the cells that may have (probably) been left/scattered after the surgery.
Lobectomy is a potentially useful procedure, yet is not a fix.
Surgical removal of a malignant tumor is not as great and easy as it may seem.
Cells can reproduce at a pretty astonishing rate.
Plus, recovery from a lobectomy is not an easy thing.
My dad went through it as well - he DID survive the surgery. And the cancer returned (because cell scatter) and it spread, and he ultimately died of pneumonia a couple years later. This is a man who ran every day, did weight training, etc. for decades. (He was in his early 60's.)
And, yeah, non-small cell IS pretty slow-moving. From dx. to death, it was 6 years in his case.
Sorry, anon, not following you. RBG and your mum are different people, I assume?