@bones, first off I agree that PSF could do a much better job of communicating their findings of the Salish Sea project in a more clear and timely manner. I have brought this to their attention on numerous occasions. It's a bit of a tough spot for them as they have limited staff/funds for communications and if they did spend lots of time/money on communications I'm sure they'd hear about how donations should be going to projects, not communications.
That said, the science and research on fish farms that PSF has been doing is extensive and goes back at least 5 years when the Salish Sea project started. Under the Salish Sea project is the SSHI (strategic salmon health initiative) which is the partnership between PSF, DFO, Genome BC. Google SSHI and you'll see lots journal articles and newspaper stories, etc.
https://www.psf.ca/what-we-do/strategic-salmon-health-initiative
They also have some vids on fish farm studies on their youtube channel -
- and if you follow their e-newsletter or social media they put out lots of updates thru that. Again, I agree the communications aspect could be improved but the underlying science/research that has been done is remarkable and, IMO, irrefutable. As others have stated on this forum, PSF doesn't put their neck out on issues like this unless they are sure of the science backing their position. If you recall several years ago they conducted an independent assessment of run-of-river hydro projects and the results essentially stated that the newer projects are doing a pretty good job of not screwing with wild salmon. Not the results some of the 'anti-hydro' advocates were looking for but, again, they had the data to back it up after an intensive few years of study.