Qualification holds no nearing at all on a persons loyalty to the Steemit platform or the Steem Eco system. These requirement serve to restrict who can apply.

How many users have a Steem Power of 250,000 Steem Power?
How many of those accounts are owned by the same people?
How many accounts can one person use to vote with?
How will you know if an account is a second account or a genuine first?

Why is participation restricted to those not on a blacklist by Steem cleaners?
And will you hold a position of devils advocate. (so far overlooked)
Please define "manipulation"