The above case was with FB messenger which is (was?) not e2e encrypted and since Meta already had the data they were obliged to comply with a court-issued warra

The above case was with FB messenger which is (was?) not e2e encrypted and since Meta already had the data they were obliged to comply with a court-issued warrant. With E2EE, they can legally skirt such demands since they can claim they don't have the data so that's a win for them as well.