Maybe they don't but they have realized that their spam profiles on drupal.org are too short-lived to get them much traffic. As a result of this, the number of new spam profiles seems to be down.
As a side note: In part due to the spam profiles and the google traffic that they generated drupal.org served more than 30 Mio pages in March. This is an increase of about 38% compared to February with 22 Mio viewed pages.
The bigger part of this surge can probably be attributed to DrupalCon at the beginning of March.
Here's a table of the number of 403 pages by month: