They are 1. Slow on launch and on boot. 2. Very opaque and offer little control. 3. They don't integrate well. 4. Proprietary. 5. Probably most importantly, Canonical has made 0 progress and demonstrated 0 interest in improving issues 1-4.
They are 1. Slow on launch and on boot. 2. Very opaque and offer little control. 3. They don't integrate well. 4. Proprietary. 5. Probably most importantly, Canonical has made 0 progress and demonstrated 0 interest in improving issues 1-4.