When CFL.ca Staff refer to 'all eight playoff bound teams' they're actually referring to 'all six playoff bound teams'. If you're confused just use this simple American to Canadian Football Metric conversion equation like I do to see the numbers correctly:
They never said there were eight playoff-bound teams. They said there are eight teams playing this week, which is true because there are four games. But because the playoff match-ups are already decided, none of those four games mean anything so every team can sit or play whoever they want.