You can buy your Xbox Ally an official pair of anti-drift joysticks
TL;DR
Gulikit offers officially approved, drift-resistant joysticks for Xbox Ally handhelds for $20 on Amazon. These TMR sticks are automatically recognized and can be calibrated via the Armoury Crate app.
Even at $1,000, the Xbox Ally X handheld didn't ship with magnetic drift-resistant joysticks, and neither did the $600 model. But for an extra $20 at Amazon, you can change that today - with officially Asus-approved and sanctioned TMR joysticks from Gulikit, the company that's made a name for itself by supplying aftermarket drift-resistant sticks.
The company says it worked with Xbox Ally manufacturer Asus to create these sticks, that they'll be "automatically recognized" when you swap them in, and that you can use the handheld's built-in Armoury Crate app to calibrate them afterwards.
And while I haven't tried these ones (I do have a pa …