Go to their wallet: https://steemit.com/@noaommerrr/transfers

They have a ton of steem power because they bought it months ago. You can see this is the case by looking at how much they earned from posting.

Go to: https://steemd.com/@noaommerrr
Look at their activity. They are getting downvoted for the test posts, so if they keep doing it, their voting power will go down. They'll push less and earn less through curation. Other users will earn more and bypass them, particularly productive members of the site, if they try to keep spam posting.

Steem is like 20X more expensive now and the platform is just starting to take off, so who knows where it can go price wise. Point is, it's really expensive and a really long commitment at this point to just buy that much Steem Power. Therefore, this is a short term problem and productive users will take over in the long run.