I’m a member of the Peloton FB group, and people routinely post their rides in that. Technically, the bike doesn’t have a true power meter, but it’s close enough for this discussion. There are many many people, of all ages/genders/sizes who post rides avging ~60-100W over 20-45 minutes. On the other side, once you start pushing ~~150-175W avg over 20-45 minutes, you start landing in their top 15-20%.
My point being: While I don’t want to guess what an untrained, sedentary person could dole out (though now I’m curious,) just by being on this forum you are in the company of people who take training much more seriously than the avg population. I don’t at all think you’re out of the groove. For what it’s worth, that feeling of perspective will always stick with you. I’m a smallish rider by weight and have a 3.23 w/kg. There are people on this forum who will talk about their untrained starting FTP being higher than mine at 1.8 or 2.0 or something w/kg. That’s just how the game goes; there’s pretty much always someone faster. Just gotta focus on staying consistent and maximizing your own self.