Recent data point. We are both WP. Boarded a Dash-8 home to CBR in SYD at a bus gate. After a few minutes, we were all informed that the aircraft was u/s and we needed to disembark back onto the bus and we would be advised of onward flight accommodations via the QF App. It took a fair while to get everyone off, plus the premium hand luggage so we were on the bus for probably 10-15 minutes before it moved back towards the terminal. In that time, both of us were re-booked and advised via App for a flight that was leaving in 20 mins time. I heard someone else on the bus talking to work colleagues - one of them was Gold and had a flight in 2 hrs, one was WP and was on the same flight as us and one was Silver status and had not heard anything at all.
This has been my experience over several disruptions over the year as a WP (and sometimes even as P1 back in my working years). So I am absolutely confident that disruptions are dealt with in status order, allowing for unaccompanied minors etc to probably jump the queue (as they should).