The details from the article that stand out to me:
* The US Government paid nothing for Recreation.gov, and the site is instead funded by fees charged on the platform, that are passed through to the site's operator, Booz Allen
* The amount generated by those fees and paid to Booz Allen is not publically disclosed.
* There are times when government agencies (like the NPS) offer free tickets (aka, timed entry to popular national parks), and Booz Allen still tacks on a fee.
* Similarly, when you enter a nonrefundable lottery for popular permits (climbing Mt. Whitney, rafting the Salmon, etc.) the $6 fee you pay to enter doesn't go to, say, conservation efforts in those areas, but goes straight to Booz Allen.
On princple, I don't mind user-fees being attached to some activities in public lands. But this payment structure seems designed to defraud the American public. Certainly, the contractor is providing value by delivering online reservation systems, and that costs money, but they should not be incentivized to charge fees that go to them, not the public lands.
I hope the lawsuit succeeds in gaining class action status, and prevents other government websites from being structured this way.