I do not understand how such exchanges still exist? In what jurisdiction are they registered?Why are they promoting really fraudulent coins?Who knows the answer to these questions-please answer.
No one does. Try to find who is controlling Binance or Bitmax, or Bitfinex, or almost any other top exchange. Only thing stops top exchanges from doing such an obvious fraud is they know that their reputation will give them much more money with not so obvious fraud.
Even those top exchanges struggle acquiring new customers, so their schemes become more and more obvious each day. And small exchanges have almost zero real customers, which leads to such listings.