ARM servers definitely seem to get more popular. Seems that for a lot of tasks they are the more economic option. Consequently, you want more and more development for ARM. That would be one reason. The other is, that developing for ARM is more fun, whenever you touch parts which are architecture-dependent.
For the computer: the Air is a great laptop. I am very happy it doesn't have a fan, so it can never get a clogged fan and it works great. Currently, I am running Linux on it via VMWare, so I get the best of two worlds. And Linux really flies on it. Once it is no longer supported by macOS, I am certainly going to go native Linux. As it is an M2, that probably would work already today.
For the computer: the Air is a great laptop. I am very happy it doesn't have a fan, so it can never get a clogged fan and it works great. Currently, I am running Linux on it via VMWare, so I get the best of two worlds. And Linux really flies on it. Once it is no longer supported by macOS, I am certainly going to go native Linux. As it is an M2, that probably would work already today.