This is incredibly outdated mate. Literally everyone I know does all the things you talk about. I don’t even really know where to start in response. You’re also conflating climate change action with environmentalism.
so literally everyone you know will not fly on vacation, only uses mass transportation systems, lives in the most dense of housing, eats only the bugs, upgrades their gear only when it absolutely needs to, and then buys used to recycle. Get all their clothes from thrift stores, and all huddle under the communal blanket for heat?