Earlier quoted context omitted.
Gold is used to make things. You can argue what its value should be as a material alone, but it’s not entirely speculation.
Crypto can be used as a store of wealth when crossing borders preventing search and seizure of your wealth against overzealous governments. See Russia in the early 90s which would regularly search and confiscate cash from people leaving. That alone makes it very valuable.
Bitcoin specifically, with its multi-trillion dollar market cap, is built up that high purely on speculation. It is a very fragile store of wealth, especially the higher its market cap becomes.