He doesn't see disgust. Sympathy and concern, yes, but nothing malicious. "We'll find the Roci and get back home. And when we do, you can talk to Talissa. I can be there with you offscreen if it helps. We'll figure it out, yeah? If the Roci's where you belong, that's where you should be."

Fair or not, it won't do anyone any good if Alex just sequesters himself on Mars because it's what's expected of him. Maybe it's not an ideal, fairytale ending for him to stay a pilot, but life never has those.