He went up with Bezos, and I recall that his speech was rudely interrupted by Bezos excitedly shaking a champagne bottle.
Shatner has often been critical of the Trek ethos. I saw him give a talk in the 1990s where he said "it seems to me that technology is an evil demon come to destroy us all"
"Evil / malfunctioning AI that must be stopped" was a persistent theme in TOS when he was Kirk, significantly less common in later series.
TBH, Capt. Janeway (Mulgrew) is still my favourite leader in Voyager perhaps more than Picard (Stewart)
Ironically - didn't Shatner outgrow his love for the mission to boldly go?
When he returned with Jeff Bezos something of the coldness of space returned with him, he said something cryptic like "All I see out there is death..."
Edit: Bezos, of course not Musk