The point is no one can rank up to Senior Member, Hero member, or Legendary member by 5, 10 or 20 rounds of 50 merits like that. No one can successfully get it (from only one user or from some others) without being caught. Such cases if occur are seriously and will be treated in one way or the others.
@hd49728
If you have checked ~50 is the exact number of merits required by THE-DEVIL to become a full-member. Hope you have noticed that. I read in the below thread that 100 merits required to be a full member:
https://bitcointalk.org/index.php?topic=2818350.0Now it is the activities required.