This pattern continues through to the commencement of the winter timetables at the end of March 2023. There are some variations during February 2023, including QF332 replacing two QF10 flights, but still operated by a B789 aircraft.QF10 terminates in PER and turns around as QF9 on Tues-Thurs
On another AFF forum I noted complaints about the use of A332s & B737s with inferior or no business class for the QF9 MEL-PER / QF10 PER-MEL sectors. A332s were used intermittently over the period 25 Nov to 12 Dec on the Friday through Sunday services.
I suspect the B737s complained about, were operating normal MEL-PER / PER-MEL domestic flights on the Tuesday through Thursday Perth turnaround days.