What is speculative about people earning money in exchange for labor and investing that in crypto? Crypto is currency not goods that they would need inherent va

What is speculative about people earning money in exchange for labor and investing that in crypto? Crypto is currency not goods that they would need inherent value. It is not so much specilation but demand, supply and investor confidence. Stocks and forex are just ad much speculative. Tesla is not valued more than all other car makers because if inherent value but because of speculative value and investor confidence for example.