i'd say i'm probably against the crypto reserve even if i'm happy to benefit from it

like why should the US government purchase these coins? any answer for where the money comes from is also not really enjoyable

countries have always been stacking things

other reserve types are: 

fx reserves
natgas & coal reserves
grain & food reserves
water reserves
rare earth stockpiles
pharma reserves
sovereign wealth funds
military stockpiles (ammo, fuel, gear)

sovereign wealth fund is a bit different from the rest of your examples

i see the case for a btc reserve, it's harder for me to see the case for stacking these other coins -- turns it less into a reserve and more into an investment fund imo

i see 

the way i see it is by bringing them into the reserve, it elevates their status and protects vested interests of its founders/investors, preserving the crypto status quo of a rich and varied but largely useless ecosystem

could ofc be just to kick the can down the road another 4 years while more of them die natural deaths