Yes
but you can get the new one with the new keayboard for the same price
Should be the new keyboard, i.e. The 2020 model.
Do you see e.g. At the clock rate of RAM.
Nah, is the new one.
The Butterfly Keyboard is definitely not uncomfortable to type.
On the link is the MacBook Air 2020 with the Magic Keyboard. Before you buy this, however, I would strongly advise you to buy the processor upgrade to i5 for 50 euro.