The Generals at 46x. Is it sustainable?

Never was so much owed by so many to so few

Bud Fox said that "life all comes down to a few moments". The stock market now for sure all comes down to a few stocks, seven to be precise. The Magnificent 7 trades at very high multiples and hedge funds are very long. Is this sustainable?

The P/E ratio of the M7 is 46x