so far no big investors say bitcoin is not safe many I have met say bitcoin is not safe only people who want bitcoin to fall they create ways or fake news to drop bitcoin price. so if the question is bitcoin a safe place, the answer is bitcoin is really a safe place.
Many big investor in the past having said that Bitcoin is just like a bubble, Once this bubble boom you don't have anything in your hand. If BTC is the safe haven then Chinese would definitely fill up their bags. What you say is BTC backed by US government or Elon musk 