The original owner
washed his hands of it years ago. He may have sold it to a scammer or he may have broken bad himself. It cannot be trusted.
Did you expect that the former owner of the website do anything different? He said he sold the website and cannot be responsible for it anymore
What did you expect? Like "ok, I sold my website but I can guarantee that the new owner is an honest guy and I am responsible for his actions"
That's not how things work. And if you properly airgap your computer, the risks of using this website are very low (or non existent)