Saboteur II (2-12) is a lot of fun. You could say it's social deduction, but the expansion makes knowing the roles much easier and less important.
Jummit
I think techwontsave.us is want you didn't know you want, but maybe you'll enjoy it. It has some really interesting guests and topics.
You are right in that if the majority would change their consumption, the change would be massive. Seeing that as the best solution overlooks that companies put a lot of effort into marketing, advertisement and interfere in pro-consumer lawmaking. So a large-scale change becomes quite hard, especially for low-income households.
Also, speaking of effectiveness: not having children is one of the best choices an individual can make, followed by going vegan.
https://www.theguardian.com/environment/2017/jul/12/want-to-fight-climate-change-have-fewer-children
There is no sustainable consumption under capitalism. Most have already cut down on their personal emissions, less meat, less flying. Good luck on trying to overcome the system by participating in it.
What can help is direct action and direct democracy, building resilience in your community. Which is hard.
I think it's a little backwards that telemetry is so frowned upon in FOSS programs, because in my eyes they can benefit the most from usage data, as they don't have the resources for large testing teams. But it needs to be implemented very carefully not to violate GDPR, the GPL license where applicable, etc, so I see why it's a hard problem to solve.
I'm using Evolution on Gnome right now, it does the job. Still hoping for Gnome Mail to finally have a GTK4 mail app...