So to quote the OP guide.
"
- Q: I've never run firmware 4.0.0 or higher on my switch, so my gamecard controller firmware is still not updated. How do i make sure my gamecard controller works after i downgrade back to < 4.0.0 ?
- A: When flashing the firmware image for any 4.0.0 or later firmware, ChoiDujourNX will generate a protective hekate_ipl.ini on your microsd, with a "PreventGCUpdate" launch target. You must ALWAYS boot using this launch target (or add kip1patch=nogc to any launch target you wish to use in the future) and use a Hekate that supports the kip1patch option (releases here do: if you want to prevent use and updating of your GC controller firmware on firmware versions 4.0.0 and up."
for the red bolded part.. will SX OS 2.2 and newer fall under this category? I have AutoRCM enabled and plan to just boot straight into CFW