Simon's just doing what he can do the best. It's those instincts that brought his character full circle, returning to what he's always been good at. Sure it would've been nice to see HIM onboard the Chouginga instead of Viral. Most folks would prefered they switched places. But I think it's rather fitting for someone of Simon's character to wander the planet. Helping others to drill through the space that HE created for future generations. It's bittersweet but an end nonetheless.