I mean size says nothing, you could do it on a Pi Zero with sufficient storage attached.

So this post is like saying that yes an iPhone is Turing complete. Or at least not locked down so far that you're unable to do it.

You need fast storage to make it worthwhile. PCIe x4 5.0 is a reasonable minimum. Or multiple PCIe x4 4.0 accessed in parallel, but this is challenging since the individual expert-layers are usually small. Intel Optane drives are worth experimenting with for the latter (they are stuck on PCIe 4.0) purely for their good random-read properties (quite aside from their wearout resistance, which opens up use for KV-cache and even activations).