Yes, it is their hub at BGY. Easy have dropped several routes from LIN because they can't get the right slots. Forget about serious loco at marble plated MXP!
BGY is one Ryanairport you can't really criticise that much - it's got plenty of facilities, a big mall across the road if your flight's delayed, and is only about 1 mile further out than MXP. MXP may have the "Malpensa Express" train, but that doesn't connect well with the rest of the city, and takes only about 5 minutes less than the BGY bus.