Actually no, that's not how life works.
Go apply for a US government job with some clearance and see how far that forgetting works while they speak to your 1st grade teachers and anyone else that knew you since birth.
And you can also apply that to anybody that would want to put the time and money to put a detective on you.
Back in the 1960s (or today even) I could write a book with some embarrassing anecdote about someeone, would they be able to order that pulled off the shelves? No.
The only difference here is "internet." Ah yes, now we're in the era of not just negative rights, which are relatively easy to enforce, and positive rights, which usually cause a clusterfuck wherever they are tried.