I don't see the problem as long as materially significant transactions by publicly traded companies are properly disclosed to investors. If someone loses money by buying NVDA then they have only themselves to blame.
Tuld wasn't wrong. There will always be financial bubbles and misallocation of capital. It can't be prevented, and even trying to prevent it would involve intrusive government overreach that would make most people even more unhappy. Investors who want safety are free to buy Treasuries.