Can Titanium scratch the Sapphire on Apple Watch Ultra 2?

How could the back of an Apple Watch Ultra 2 get scratched? Most of the time it only touches skin, and it’s supposedly made from ultra-durable materials like ceramic and sapphire. I take really good care of my watches and clean them regularly.

It’s true that the back of the watch has touched the black titanium band a few times — and I really mean just a few — but even then, I was super careful when setting it down onto the band. But as far as I know, titanium shouldn’t be able to scratch sapphire, especially not in a situation like that.

[Re-Titled by Moderator]