You can partially blame big Boeing customers with negotiating leverage like Southwest in the States. As an example, SWA evidently lobbied very hard to maintain the overhead panel design, among other things, for years. Like many airlines, SWA continues to operate older 300s as well as newer 800s in the same fleet.
Monarch pilots should appreciate their wider Airbus flight decks and sidesticks while they can... Even the C-Series (CS300) looks to provide a more ergonomic flight deck when compared with the 800/MAX. But when has pilot comfort ever been a consideration in fleet negotiations? Never has and never will.