That's the whole point. I mean terminals that can work without graphics environment. Such as what kernel implements for tty.

well, you can't display mpv videos in your terminal emulator with sixel graphics or any other kind of graphics if your terminal emulator is running in an environment doesn't support graphics, such as if it's displaying on an adm3a. perhaps you mean you don't want your terminal emulator to run inside a window manager. well, the x server and the wayland server don't run under a window manager; the window system runs under them, if it runs at all

That's exactly the point. Why can't you? Because no one implemented that support in that terminal emulator? Or it's impossible for some reason?

I get the reason of may be kernel not wanting to overload the minimalist terminal with features due to security concerns and etc, but as the article suggests, it can be moved out of the kernel, so I don't see why it shouldn't be doable.

i said you can't 'if your terminal emulator is running in an environment doesn't support graphics, such as if it's displaying on an adm3a'. that is because the adm3a hardware physically cannot draw any graphics

There is plenty of hardware where graphics is possible, it's just not happening becasue of terminal limitations.

yes, that was why i was trying to clarify what you meant by 'without graphics environment'