Executives ditched the A380 based on covid and the fact that Airbus decided to stop making them, most executives didn't expect a return to normal until this year (2023) - and we are not even there.
Of course every airline makes their own decisions.

It's still difficult to get pilots and cabin crew back, so if you can have one crew flying one aircraft and fill that with 3x PAX and at the same time make 6x revenue (due to scale in economy class and the 2x or more seats in Business) you will do that.