Objectively a false statement.
It is extremely easy to do it, objectively, so I guess you are trying to say the boogeyman will come and get us because we've suddenly opened a back door of mayhem by executing a command that auto-hides the status and nav bars? And I am guessing you think that is because enabling developer options and USB debugging (that you can disable when you're done) puts our device in mortal danger? That's all it takes.
We provide ROMs as-is, beyond that you can do whatever you want.
Unless the Roms you provide prevent me from doing what I want, which is being able to run this command: "adb shell settings put global policy_control immersive.full=com.android.chrome" instead of having to jump through hoops to root the device and install this and that to achieve the exact same outcome. Come think of it, maybe this is a bug because it is making my life unnecessarily difficult.
Correct, just like it's not up to you to decide what you may or may not expect from us or complain about on our forums.
It's not in our agenda to tailor our ROMs to your individual niche usage case.
"Niche usage case"? Are you sure you realised what this conversation is about? Do you know what the command I mentioned above does? Do you know that Xiaomi had that feature (more or less) enabled on many devices as part of the ROM and then in their infinite wisdom of knowing what is best for the end user they removed it with a software update (happened to my previous device, Poco F3) and nowadays all we get is the choice between gestures and permanent navigation bar? Immersive mode is the third option of system navigation and in my opinion the best, and it used to be part of MIUI so not niche whatsoever. With adb commands you can choose between three options, hide status bar, nav bar, or both, and you can do for just one app, a few apps, or system wide. It makes a huge difference in browsing because you have way more screen available to display webpages, it actually looks cool compared to stock.
And let's not forget that Xiaomi before it became a hardware company started as a fully customisable android skin that provided multitude of niche options missing from stock android. Original Xiaomi = full customization.
So I propose, why don't you guys re-introduce immersive mode as part of MIUI/Hyper OS so we don't have to run any commands in the first place? Or maybe let us know how to run these commands that we used to be able to run, at our own risk. Of course I could tell the exact same thing to those responsible for android, no clue why this feature isn't an integral part of the O.S.