I take your point, but I’m not so sure.
[At the least, presumably one would want to call such as part of the build process. iptables rule changes possibly inadvertently killing connectivity isn’t something you want to leave to ‘hope the developer ran this check’. Oops, they forgot.]
Many things post-installation can munge on iptables, deliberately such as ufw, pgl, or any other firewall, or inadvertently (and hidden) by accident or nefariousness. Since, for example, I don’t run qubes, I have no way to check qubes impact. One after installation insertion of -j ACCEPT would seriously endanger ones objective in choosing whonix.
In any case, where to plug in any results? The wiki item, then transform / transmit to {destination} when such becomes apparent?