Because privacy and convenience are two extreme opposites and you can only go so far in the privacy direction before you start losing everything. Discord just works a million times better as a public forum/community than Matrix and is much more easily accessible to everyone.
There is a limit. I am privacy conscious but I still use all Google Services for example, because they actually provide me with a better web, work, mobile and entertainment experiences. Similarly, I prefer Discord for big communities with channels, server bots and topics, over Matrix.
Edit: all those people saying we can’t be privacy conscious and use Google Services at the same time: yes you can. Their services literally make my life better so I will keep using them, but I keep what I share with them to the absolute minimum. I go into their settings and disable everything I can about tracking and ads personalization (even if they still track me, I do my best not to be). You can surely still be privacy conscious using non-private products. Being extremist is not how you convince average joes to think about privacy, nor by telling them to give up all they use for unknown (for them) alternatives.
While editing my comment I deleted it by mistake lol. Here is what I was trying to post:
Don’t buy a Tesla or BMW. Done.
Edit: im joking, but you can just not connect your car to any internet. Most casual brands have literally zero outgoing connections if you don’t add or connect them to a network. Androd Auto and Apple Carplay are just displaying what your phone sends to the screen, the car itself doesn’t access the internet through those. Think of android auto and carplay like “HDMI monitors for your phone that have touch too”. Your phone does everything the car just displays it.
Connecting via bluetooth should also not be any problem since bluetooth doesn’t include internet access (unless you activate that ok your phone but Im sure the car will not use it). Bluetooth only sends and receives small bits of data that your phone chooses to send, not what the car chooses. Contacts names, phone numbers, audio and microphone are the only few data that gets sent to your car and only during phone calls or audio listening.
In the end, just avoid cars that have always connected systems like Teslas or modern BMWs or similar cars. Most Volkswagen, Audi, etc etc are 100% offline cars when you don’t connect them to a network. Most now can do it, but most its a subscription service that you can just not buy, and some even need SIM cards to work, that you just not use. Unless its a Tesla, those are connected even if you don’t pay the subscription.
Test drive the car. Disconnect it from all networks or don’t turn them on. Try to use all features. If the car constantly complains that it has no internet access for all of them, thats good.
Note that GPS access is always on and doesn’t require any subscription, so maps and navigation will still work. However that is not really a privacy violation by itself because GPS on cars and phones only receives signal, doesn’t transmit anything. You wont have traffic information or weather or anything tho. If you have traffic info, the car is connecting to some network, find how to deactivate that.
Many modern cars are too connected, thats true, but with the exception of a few brands, most cars go 100% offline the moment you disconnect them from their data services or don’t pay for that upgrade/subscription. So you will be fine even with a modern car.