I think they "just" meant "set OLED screen to full brightness white", which is the kind of app my cheap Amazfit has too. And I can say from experience that that is still really useful, because OLED screens are pretty darn bright.
In the case of Amazfit (which I presume is similar here) you can set it up to turn on when long-pressing the dial, it can switch between white and red light by turning the dial, and it takes a few seconds to reach full brightness instead of just switching on. Meaning you have a chance to change it to red without waking everyone up in the middle of a camping trip.
Dunno about this one, but my Amazfits all have the option for wearing direction, so you can decide which way the controls face on asymmetrical models. It works and I've thought about using it even though I'm not a southpaw; worn distally, the Balance's digital crown tends to snag on things.
You can also automate night mode by time of day, which is nice if like me you prefer simply to wear your watch to sleep. The red night display mode, at minimal brightness in a dark room, is enough to see when you want it but not enough to disturb when you don't.
In the case of Amazfit (which I presume is similar here) you can set it up to turn on when long-pressing the dial, it can switch between white and red light by turning the dial, and it takes a few seconds to reach full brightness instead of just switching on. Meaning you have a chance to change it to red without waking everyone up in the middle of a camping trip.