It is currently possible to block unwanted tags on Tildes. It would be great to also have a feature that allows users to raise tags they're more interested in. Posts with raised tags will get a score multiplier for the user that raised them, in the same way as Exemplary comments get a score multiplier.

An example of a website that implements this really well is https://lesswrong.com, where you can give score multipliers to different tags to raise or lower them on your homepage.

This would be a great positive mindset gathering place for folks who want to have more productive and less alienating discussions than what fuckcars etc provided.
The urbanism movement talks about solutions and work being done at the larger governmental scale, down to the local "tactical" or grassroots scale. These ideas are how to work to improve the housing affordability crisis, pedestrian safety, and generally help make more people friendly municipalities & communities that can become financially more sustainable. There is overlap with permaculture and environmentalism.

If you're unfamiliar with this movement, some great places to start are books by Jane Jacobs, Strong Towns by Charles L Marohn, Bowling Alone, by Robert D. Putnam, and countless YouTube channels like Not Just Bikes, Oh the Urbanity and many others.