Really? That is your response?
They have 5 days with 24 full hours per day available to them and you say they've "run out of time"? Have you even ever watched Big Brother prior to Channel 9?
The point is also that the evictee's perception of both their HM's and their view on certain things/events changes the very moment they step foot outside of that house. It in turn affects they were they speak to and about the remaining HM's and it can, to some extent depending on the situation, indirectly reveal outside knowledge to them.
I'm sorry but you are completely wrong with your reply.
Obviously Channel 9 and BB in its current form is a total mess regardless, but it's still a question I'd like addressed anyway. The way they're doing it is completely random and makes absolutely no sense.