The question about "Proper storage", was not about the quality of the maintainers.
But everybody was expecting 'few weeks", but it is going to a few months.
Aircraft that are in cold weather can have toilets or other water systems frozen.
Static and dynamic ports that are not properly closed off can be entered by spiders, ants, mosquito's and other small animals.
Pressure systems like fuel, oil and oxygen need proper purging or risk contamination.
Aircraft in moist weather can collect water in the strangest places.
As I said, most expected some weeks, but it's going to be months.