I don’t know much about law but I assume that you can also be liable for things you don’t own.
If I rent a car I don’t own it but I’m in full control of it so I’m fully responsible if I break any laws with this car.
I think one could argue in a similar way for Xitter accounts.
I’m using arch on my desktop for >5 years. Never read those instructions. Sometimes my update looks like OPs. Just hit Y. All fine.