I don't know what that amount is based on, but you have to keep in mind that this is the Wielerflits podcast, which struggles to find any listeners and needs every kind of clickbait to gain attention. They say that Jumbo really can't use a doping case right now because of their sponsor search. No sh.t, Sherlock.
The amount that Jumbo paid to the team is known, and it is 12 million euros annually. That's for a combined team with a speedskating division, a women's cycling team, a development team, and a men's pro team. So that's 10 million euros for the men's pro team at best. And that's the main sponsor.