Half of it is probably burned up

They ARE labeled, but they don't exactly come back down in a controlled fashion where the labels necessarily survive.

And even if it the label survived, its not like a bunch of part numbers would mean anything at all to a lay person and would still generate these dumb posts.

If you zoom in on some of the pictures you can see what looks like partial labels, maybe part or serial numbers? But all of them are pretty burned and chewed up. And based on the barnacles, it spent a lot of time at sea too before washing up.

That's pretty typical. SpaceX debris that washes up in the Caribbean is in similar condition.