Lennart Poettering has repeatedly and with certainty let us know he has
no use for POSIX. I guess now the Debian project is acting as his proxy
in this matter.
Did you notice the one guy who said it would be "it would be 'rude' to
impose something wanted by only a part of the users"?
Personally, if my operating system doesn't come, as a baseline, with
vi, ed, cut, grep, sed, awk, bc, dc, diff, dd, df, du, fg, head, tail,
and the like, then it isn't an OS I'd want to use. The fact that an OS
isn't certified POSIX is no excuse for deliberately leaving out easily
included POSIX programs and features.
Is it possible for Devuan to "put back" what Debian sabotaged?