When SUEXEC is off, manpage is still installed:
# tar tJf apache24-2.4.43.txz | grep suexec
because in pkg-plist the manpage is not prepended with %%SUEXEC%%.
Will be committed soon.
A commit references this bug:
Date: Thu Aug 6 15:19:44 UTC 2020
New revision: 544279
www/apache24: Don't install suexec manpage when option is off
Submitted by: Michael Osipov <michael osipov siemens com>
Approved by: apache (brnrd)
Thanks for reporting!