to people who protect, spend time in and love the natural landscapes

Gotta say, No True Scotsman right back at you. Plenty of hippies around me like to leave their shit and beer cans around the hot springs they drop acid in - though I'm sure if you asked them, they would tell you about how intimately they connected with nature.

I don’t see the culture of most outdoor oriented communities in the US as anything other than weaponized FOMO meant to push people into an endless loop of needing to conquer more and more nature to prove themselves to their peers.

Honestly, this sounds like you are just judging people for enjoying the outdoors in a different way than you enjoy the outdoors. I basically am one of those people you describe, but I have literally never posted on IG about what I do, and have not been active on social media for years. I do the things I do because going on epic, challenging missions is personally meaningful and memorable to me, requires me to challenge myself and see how I can overcome those challenges, and creates new relationships with others and deepens my existing relationships.

You can enjoy the sunshine in your local city park by sitting on a bench. Or you can play soccar with your friends. Neither way of interacting with nature is "wrong"