Absolutely avoid. No concern for safety. I almost drowned and when I asked if I could change into dry clothes in their office, they said no and that I could use the port a potty.
River is way too high and fast right now for anyone not highly, highly experienced. We took a tandem kayak out. Asked at booking and on day of about river conditions. No indication that casual kayakers should reconsider.
Within a few minutes on the river, couldn't avoid tree, flipped over, stuck under kayak, passed out but re-emerged and caught my breath. Luckily was able to float to an island where the second raft passing by picked me and bf up who was able to hold onto said tree until pick up. Shaking head to toe from being in the water. Wasn't asked if I was okay. Did get picked up thankfully by someone from the office. Not asked then if I was okay. Got ointment from first aid kit from office but had to strip by my car to change into dry clothes. Took a couple hours to feel my toes again.
If you just need portage, sure, they'll drop you off a few miles up. Other than that, you're on your own. Probably a great trip when area isn't experiencing record snow falls and run off which we learned from locals after the fact when they were surprised we were on the river at all.
For comparison, the local that was kayaking ahead of us that kayaked the river a couple weeks before stopped his trip short after seeing what happened to us. He was the only one to show any concern or compassion. Thank you, Will!