Yul Edochie secretly impregnanted and married another woman without his wife knowing. His first wife did not know about this. So you really cannot compare the two. It would have been much better if his family & the first wife had consented and agreed to this sham of a marriage .
You cannot compare Ned Nwoko's marriage to Regina Daniels with what Yul Edochie did. Ned Nwoko is openly a polygamist and he most definitely told his other wives about his intention to marry Regina before marrying her or impregnanting her. These situations are different.