No, I don't think this is true and just the usual nonsense used as justification. Some people continue to develop X, so I hope this is sufficient that I can continue to avoid Wayland.
edit: what are you gonna do if it turns out you cant avoid wayland? have you considered actually reporting the bugs you might see in wayland instead? because the future very much looks like A LOT of things are gonna go more and more wayland, its gonna be with reduced functionality to stay on X