OP of that topic stated clearly, staking your bitcoin isn't a guarantee that you account would be recovered. The staking is just one of the many method/ process needed to prove you are the rightful owner of the account in question.
In his words
It's not 100% guaranteed that you'll get your account back, but it's a pretty good start. Of course, if your account is compromised, the hacker could just come back to this thread and edit/delete whatever address you post here, so that's why I'm asking people to quote the address posted by the preceding user in this thread.