It is absolutely low preassure compared to sea level.
Also, note that I said it was a combination with very dry air.
Of course. But it isn’t enough to make any difference on your sense of taste.
At least not big enough to justify naming the entire reason for why airline food sucks.
The food sucks because the food sucks. There is no other reason. You aren’t going to convince anyone otherwise.
The food sucks because the food sucks. There is no other reason.
This is absolutely a part of it, but you are simplifying it too much, here is a BBC article about the issue:
https://www.bbc.com/future/article/20150112-why-in-flight-food-tastes-weird