I am assuming his the KOM for the strava segment.
I am just going to say it and I am not trying to offend you but my thought is who cares...… believable I have no idea I guess could be many things could in play like he has an ebike or electric assist or he is just an amazing athlete.
I have been blown away on a group ride of guys who were MUCH older than me and I was embarrassed but then again I have had a good ride day (very few) where guys younger than me were struggling at my pace.
Point is I guess, don't let it bother you if it does and ride on brother!