[2020] Anachronia sift soil OP?

I was just casually sifting soil, while doing things on my hardcore, and I happened to notice that the artefacts from the Orthen digsite, that i got while sifting soil, were consistently giving me good exp. Then it hit me. Their tier range is pretty small, and simultaneously is very high level. In other words, you are GUARANTEED to get good exp out of those artefacts, and frankly, you get them more frequently than if you were digging.

Now I haven't done any actual testing with numbers, but i'm just leaving this out here, for any people interested to do the math!

P.S. I have the full master outfit and am using the sift soil spell.