Other than newsprint (and maybe bond) almost all pulp & paper products seem to be only increasing in demand. It's just that new mills are being built overseas.
In BC though, between beetle kill and forest fires, fibre has gotten a little tight, although there is still enough to export whole logs.
Depressingly, Canfor just idled one of their Prince George mills (Northwood IIRC), joining a long list of mills that have closed over the last few years.
Curiously, the nitrocellulose they talk about in the article comes from the"Red Liquor" process (IIRC), and the last mill in BC that used that process was Port Alice which closed a few years ago as will. And IIRC the mill was sold to a Chinese company as well. Skeena Cellulose in Prince Rupert was originally built in WW2 just for gun cotton manufacture, although all their Red Liquor digesters were idled years before they shut down (around 20-25 years ago IIRC).