No man, it is actually going... Do you know how many more ARM devices there are in the world? People who don't own basic computers carry one around... even in the most rural places. It has also been discovered that lots of server operations are more efficiently done with ARM clusters. High Performance Computing has known that for a while too.
So you see, Manjaro being a rolling release distro, should, and is rightly one of the first to get on the bandwagon of pure ARM support. Focusing on it will enable us to have a better ARM experience than other distros and we can leave them all behind.
I am typing this from my x86_64 laptop, as I walk to the electronics recycling bin.... it will not be missed. (Sooo excited!! I just ordered 42 RaspberryPis for my mini cluster !!!)