Do these fiery debates help? I say as someone who also was like this in my late teens.
I do local advocacy for transit and civic planning related purposes in a US city. A lot of the "work" is really boring, just going to long public meetings and listening to SMEs drone about very specific issues. But that's where the sausage gets made. Our local transportation department is very receptive to the public's urban concerns and is doing a lot of great work. But they're blocked right now. Not just because their funding is uncertain or due to cranky old neighbors, but mostly because they have staff shortages as Baby Boomers retire. There's nothing we activists can do about this, we can't campaign for a measure or bill that puts butts into seats.
If you go to Youtube or online North American urbanist forums though, folks aren't interested in these local issues at all. A lot of it is raving and ranting about how the US puts cars first and hates its people. This is fun to get emotional about (and believe me I've had enough close run-ins with cars as a pedestrian or cyclist to feel the rage) but doesn't actually materially affect our local urban conditions. But it's a lot less fun to talk about budget appropriation and staffing politics and much more fun to get angry at the GM Streetcar Conspiracy, so nobody does.
I'm not saying these topics aren't important; if you're new to the issue it's important to understand why North American built environments are the way they are. But what's more important is working to change the reality around you, not getting wrapped up in online debates.
