Gold and Silver does have intrinsic value , while crypto currency and fiat does not. in what way? wel both gold and silver can be used to make stuff with. Both jewlery and electronics and in medical cases. In other words, it have a physical use even with no money involved. No belief in its value is needed for there to be a use case. Where as crypto currencys and fiat requiers a blief in it having a value as in itself if none used it, there is no value.
Thats the main diference.

But ofcourse you could argue that if you dont know what it can be used for, its useless and thus no value. But it still exist as a physical material that plays a part in nature. Get the picture?