Would it be possible to lower barrier to entry that low?
To the point where installing some Linux distro would be as easy as installing a game on Steam or installing an application on a phone?
There is existing software for installing Linux from Windows.
For example, old WUBI for installing Ubuntu, and linixify-gui (fork of abandoned tunic) apparently does this as well.
So question is, should there be some effort put into making a modern installer of this kind? Something that even the person with the smoothest brain can use to get Linux on their PC?
Are there any existing projects that try to make this happen?
This might not be feasible. IDK how you could install a whole OS, inside of another, without looking like a serious virus or malware. There are many files that cannot be changed while Windows is running (why it needs to reboot so often for updates). And no sane OS is going to let a program edit things like the MBR.