That suggestion about Ryanair using the mothballed old terminal was long before Covid.Given that volume of Ryan Air traffic under DAA’s watch, letting the old terminal just rot instead of becoming a Ryan Air hub and driving on the airport traffic seems very short-sighted.
At that time Ryanair had a lot less services from Cork and the thinking was, if they were allowed use it then other legacy carriers would be detered from operating from Cork and that Cork would be dependent on Ryanair akin to Shannon and a few others.
Also infairness to Ryanair, they kept operating during Covid so hit the ground running after it and took over all of the Emerald / Stobart routes ex Cork.

