It's source sided and he won't mess up with source things
If it was open source and then some one was interested in it then it would be possible
Also there is no phone from xiaomi which have sd410 with miui 11 which was possible to port (besides that huge of stuff and hard works)
So no one ui no miui not oos and ......
I am not responsible if flashing this ROM bricks your phone or causes thermonuclear war and ends the world as we know it. You have been warned.
I'm not the rom developer and I don't have the capacities to maintain my own rom (I have a fulltime job and a private live).
It should not harm in most cases.