Not even close to true.   The EO was 1) amended to include most work visa and 2) extended the EO to the end of the year.     If you have an immigrant visa you still get a green card.   If you adjust, you get a green card.  If your ROC, you get a green card.  If you lose your green card, you get a new green card.   The EO doesn't change anything about how green cards are issued in the US.   It limits who can get VISAS from today until the end of the year.   CR1/2, IR