It doesn't look like the 3/4 copper is stubbed down at all, looks either flush or slightly above the floor. I like to see them at least somewhat into the drain to keep water from splashing all over the floor.
It may not matter too much but I do have to wonder if/how much of that kitty litter has gone done that drain.
It's copper so the pipe through the wall doesn't bother me.

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Accurate Inspections & Consulting, Inc.
773/844-4AIC
Markus Keller