He’s basically trying to angle it so that they (USADA/WADA/UCI) allow him permission to compete (at triathlon) in return for him testifying.
He’s been given plenty of chances to testify, as his ex colleagues did in order to earn their lenient 6 month sentences, but refused to and thus got banned. Hence the discrepancy.
As to the money angle, I certainly have sympathy with those he sued and slandered (and lost their jobs as a result) and believe they should get their money back.
As for prize money and sponsorship, that’s a bit harder to justify, a lot of the other pros still have theirs, along with their reputations.