72 hours are not enough for maintainers?

Hi, MacPorts Guide says "The maintainer should apply the patches and close the ticket within 72 hours." "If the maintainer does not respond within 72 hours, you or another committer may review the patches and update the port." But actually this is not always the case. So I started to consider 72 hours restriction is not realistic so this part of guideline should be modified to be more practical. Any comments?