I like hard, productive assets over financial instruments, for long holding.  For most people farmland in South America or .au/.nz is piainful and inconvenient to own.  That's a significant part of the reason why it is relatively cheap.  It's probably not good for someone in retirement for whom liquidity is a paramount factor, unless they think to actually use it directly, or have ready arrangements for reliable rental income from it, in excess of what they could buy in an annuity.

I do think your proposed allocation is rather heavy in PM exposure.  I think streaming is probably better than miners, and the risk exposures are so correlated that I can't see much diversification benefit from holding significantly in both categories.  Physical metal is the systemic tail risk hedge.  Streamers are a levered inflation play with nice asymmetry, so I would trim the miners.

As for energy, that's a complex topic which I can't address right now.

In response to other questions: I don't hold significant amounts of cold reserve bitcoin, although I do have about 2% in a liquidity wallet at the moment.  My inclination is to trade it and use it rather than to hoard it.  People with less intense commitment to the peculiar merits of XMR than I should  definitely hold cold BTC as a significant part of long-term crypto.