Re: Microsoft Android ®
"Does Android still use FAT?"
"Surely all the phones that have dropped micro SD cards have no reason to support FAT. "
But those that haven't do.
"The ones that do should just refuse to support FAT formatted cards and reformat them with ext4 or whatever."
That would be a serious mistake as it would make it very difficult to be able to use SD cards to exchange data with non-Linux computers. You say nobody is using that capability anymore, but that just isn't true -- I personally know lots of people who do.