To have an unbiased view, you have to own both metals and craptocurrency at the same time,
Well, no, but let's go with that for argument's sake.
and anyone who does own both tends to look at craptocurrency as a wretched thing that you feel like you need to ditch for more metals.
Not in my experience. I know a lot of folk that (at least claim to) own significant investments in both these categories. Most of which I am aware (myself included) are more bullish on crypto than on PMs.