I'm with you all on this one. It was a new find for me; but as Bjornhall points out, I'd much rather it had been corrected in the POH of the acft I rented before I and my fellow pilot had to work it out!
Surely the structure of the POH is such that it allows for page revisions (like Bottlang etc) so have cesna owners not been contacted and provided with an updated table? Maybe they have?
In the meantime, if we assume (dangerous) that the imperial lbs scale is correct at least the metric error is in favour of a more conservative approach i.e. it creates an over MTOW when in fact the imperial scale indicates a 'within envelope' situation.
Any views from 172s owners rather than renters, like me?