How do hydraulic flat tappet lifters fail?

That’s kind of what I was expecting to hear. I have new bearings ordered already, so they were being replaced anyhow. Here’s where my experience is - I know what a completely destroyed bearing looks like, and I know what a brand new bearing looks like. However, learning what they look like after “some wear” or “normal wear” is something I still need to learn.
It looks to me like a lot of uneven wear and like some heavy bedding has occurred.