Can I please understand the reason why cron is suddenly, in fedora (FC40),
giving "normal" users a PATH that includes /sbin & /usr/sbin?

There does not seem to be a really valid reason for this & it could be something
that creates unexpected problems. Normal users should not really have sbin in
their path.

Fedora rejected,

    https://bugzilla.redhat.com/show_bug.cgi?id=2292893

as being an "upstream change"...

It seems to be due to,

    Commit 7575e75            Using _PATH_STDPATH instead of _PATH_DEFPATH

Please help me understand this!