What Mathieu Van Der Poel has to do with Ineos? He's not a Grand Tour rider, and he most likely never will be. I didn't noticed Ineos or Jumbo bother him much during the classics. Heck even steppers can't do much when he's in top form.
I didn't say he had anything specific to do with Ineos, but I'm sure at some point, if not already, he will be offered a huge contract from a deep pocketed team that will want him to ride the Tour every year, going for the green jersey or something, and not just parading around France. And maybe not want him to race the Olympics VTT in lieu of a road race.
My point is that at Alpecin-Fenix, he is making the tradeoff of a (likely) lower base salary for flexibility -- but also that that may not be a limiting factor, Canyon might see him the way Specialized saw Sagan a few years ago, as their marquee rider in all disciplines who can sell gravel bikes in the US, CX bikes in BeNeLux, mountain bikes, road bikes etc. Maybe he even does the e-bike WC...and if he grows Canyon sales then the money could come from endorsements....so no need to go to UAE/Ineos etc.