We use an iPad. The guy that did our equipment installation said he had heard that A&H support for Android based tablets may be going away, but I have no confirmation of that.
I recently bought a 2in1 style computer and I love it. The tablet mode is perfect for live sound use when you want to walk away from FOH with the device.
I would imagine the confusion there is due to some of our older apps being specifically built for iPad (iLive, Qu and others).
Our more recent apps however, including SQ-MixPad and SQ4You, have been developed from scratch to be cross compatible, so the reverse is actually true!
SQ-MixPad is available for iOS, macOS, Windows and Android and there is no plan to drop any of these.