If Ryanair sticks to the all planes have to be at least 90% full business model it will take a long time before they'll come back. Many potential customers just won't be comfortable with being that close to others for a while. Other airlines will return faster and have a good foothold before Ryanair again can crowd the skies. And they won't be the only ones returning with reduced wages.
Boeing has secured a lot of additional funding for the crisis. Will they see any point in making up the numbers or will they hold out for a better price. Specially since they have nothing airworthy to neither sell nor deliver to them at the moment. Usually these deals if they come to anything are announced as a fait accompli. Theis time it is more like a toe in the water from the Ryanair side. And it is not like Ryanair need to go via the press for Boeing's attention.