I think Aurizon have plenty of issues, but getting out of something you are not good at and concentrating on something you are good at makes sense to me. Just because it didn't suit enthusiasts is no reason to call them derogatory names. They're not in business running trains so we can take pictures of them.
One of the key things to avoid in business is to limit the spread of your receivables by concentrating your revenue into smaller and smaller markets. This leaves your business vulnerable to downturn in that one remaining market. This in my view is exactly what the managers at Aurizon have done.
It may not happen today, but there is a reduction in revenue and profit on this company's horizon unless they go back to opening up new markets if that is possible as it could also be argued their loyal customers were also cut off by them.
As former QRN, something like 80-90% of QRN's tonnages was coal or bulk minerals. Even as old QR, coal was 90% of the business.
Stuffing around with grain and other commodities they were clearly not good at doing or wanted was a waste of time and those lost tonnages was alot of hard work for little return as road competition is very strong, especially in the SW. The rollingstock for Western coal is not compatible with CQ coal (or it used not to be) and the days of hand me down equipment has run its course with CQ gear simply too big and heavy for a number of reasons.
Aurizon have plenty of diversity in their mineral division and the coal industry has more than half a century in it.
Western Coal is so important to Aurizon that good luck finding it on their wiki site. I think part of their issues is their history of being a public service and they are simply too top heavy and slow to deal with these smaller more dynamic markets?
If Aurizon is again ever interested in new markets outside their current operation, I'm sure they make a move when the time comes, but for now, they have plenty of work in CQ and other.