Maybe you could be happy with that, or perhaps I could be as well, but you and I aren't ChiTu. And ChiTu is free to do whatever they want (including doing nothing at all).

And that matters because statements like "just buy an open Chinese printer" are non-starters. The machines themselves have the soul of ChiTu inside of them and openness isn't really their jam.

So while the PC software that produces the layer images can be replaced, the printer's brains stays the same.

(This is very different compared to the world of conventional world of FDM printers, wherein: It's just some sensors, motors, heaters, and sensors; a screen, if present, is optional. A person can replace the brainbox of a traditional FDM Cartesian rig with open, off-the-shelf parts and be printing something in an afternoon, and there's a whole industry providing parts to support this kind of thing.

ChiTu isn't that way.)