Wow, 9 batteries for 977 shots... something goes wrong... third-party batteries?
Even assuming the X-T2 is more power hungry comparing to older Fuji's...
One day I had shoting full day with 2 cameras (T1 + E2S), made 1214 shots in mode similar to PJ's style, and finished with 4 batteries depleted (even a bit less).
Battery life on mirrorless cameras is definitely a huge concern, especially for those of us that came from a full size DSLR. But only averaging a little over 100 shots per battery is, even by mirrorless standards, a far cry from being acceptable and I believe way below the norm for many of us. I have no PJ experience and I can imagine the demands on a system could be very trying, but I have shot events in remote locations and have averaged more like 300+ shots per battery.