The reason why is simple. It cost 6 steem to open an account. One can open an account and bidbot (mostly just posting spam with no value) the account to higher reps and open 1000s of accounts just for this purpose. This is the reason. It is true that whales can bid bot to buy rep. While DAPPS will also exist in the future to adjust rep, so you must wait and push for the dapps to adjust users who used the bidbots rep if this bothers you a lot.
@gray00 Can you please explain what DAPPS is? This slipped my mind though. That's a good point you mentioned. Thank you.
It's just a short term for a front end like steemit.com or busy.org for the steemit blockchain or any blockchain that works. Steem being the only one I know of at this moment.
@gray00 I see. This sounds interesting. I hope people gets more committed to join Steemit and doesn't quit early.