Surely, Cupcake Cupich could accomodate more than 10 people in Chicago's Holy Name Cathedral with proper "social distancing" for his "francismasses".
That's a occupancy rate of less than 1%.
A little histoy from Wiki:
As soon as the Second Vatican Council was concluded in the 1960s, Holy Name Cathedral proceeded with a massive renovation project to alter the cathedral interior. From Easter 1968 to 1969, the cathedral was closed and Masses were held in various locations including a nearby school gymnasium. At this time all of the stained glass, oil paintings, and marble statuary was removed from the interior of the cathedral. The end result was a relatively plain room, dominated by a six-ton granite altar and Resurrection crucifix. At midnight on Christmas Eve of 1969, Holy Name Cathedral was reopened.