@256 i used wubi a couple of times! I don't need it anymore after ditching windows right about 2012,but it's weird it'd be considered deprecated since it seems so practical...
@mmcm @256
Seems a good fork exists:
https://github.com/hakuna-m/wubiuefi/
and general chat about it
https://askubuntu.com/questions/654990/can-i-install-wubi-on-windows-10
(especially liked the 'it's not supported' being repeated but people saying it works fine (yes pinch of salt there also but a lot seems like there is a difference between 'we don't support / encourage it' and "it's more possible than not, do a backup first".)