2. Linux servers are targeted and breached. Linux desktop share is too small to be worth it (yet).
3. Windows updates aren't stealthy for a considerable time.
4. That's a matter of opinion.
5. Some distros do, but it's opt-in. Transparency is better on the Linux side too. I agree on this point.
6. You are tempted to spend time on customization with unclear objective benefits.
7. Developers don't owe you anything.