differing designs and approaches to problem solving;
Those are not the same thing.
Someone may come up with a different design of something that works perfectly well, and as long as the new design also works perfectly well, there’s no harm.
Problem solving by definition needs a problem to exist, IF one exists, the solution must present, at the very least, less problems than the original one did.
Here in this case, we have a virtually non existent problem, “solved” by a “solution” which added more risks than the harness fraying presented.
Harness fraying is very gradual, from the first signs of it to a point of dangerously breaking, it’d be more likely the bolt connection offered by OP to come lose than the fraying cutting all the way though, which the OP voluntarily did cut

.
Lastly, if you’re so concerned with harness fraying, buy plates with designes that addresses the issue, like Scubapro’s, or add a layer from the excess harness you’d cut from sizing to the area where fraying occurs, or just simply realize it wasn’t even a concern to begin with so you don’t create a potential problem where none existed.