So I just tried this at bulk scale with all my tools..Pretty much scraped all Pinterest for this..
-Found 700 EXPIRED domains that are available to be registered and on paper looked good. ( you will be barely even able to find 1 doing it the way OP suggested...)
-Ran them through the smartial in bulk
-Manually Went through ones with plenty of results available to copy
What I found was absolute crap sites,with barely any content to copy ( maybe 4-5 decent articles max each from a few sites)
Absolute $Hit method which doesn't works,
Don't waste your time doing this manually, I basically checked all the available domains already that you would be able to find...
Very VERY far from what OP Claims & An hour of time wasted.
Just sharing this so no one else falls for this junk...