Impossible for me, unless all people, businesses, and any other establishments uses crypto for payments( we say BTC or Ether).
By the time I will withdraw my crypto currencies into fiat it will already be taxed (on the third party app that I am using). Also our government won't tax you directly if you are only withdrawing certain amounts, not more than millions.
That'd raise the AMLA warning and we'll get taxed the moment we explain the gains are from crypto.
Smart way is to do so in smaller amounts, but larger holdings will have to bear the price movements. Sucks if they tank though.