Organics with coco works fine, it's really not much different from peat in my experience. I ran out of peat when I was making my 30gallon no till pots and one of them is 1:1:1 Coco/aeration/vermicompost and I've never had any issues with it it needs a bit more water than the other plants but that's all I've really noticed.
I've seen tons of people making organic or living soil mixes with coco. The dude that pushes the soil horizon system uses Coco in his mix instead of peat afaik too he likes the like uncompressed fluffy more fibrous looking Coco, I'm pretty sure it's the conibo stuff BAS Sells.
Mr Canuck is kinda a bro science hackjob though imo, not someone I would necessarily emulate but he gets the basics across on how to grow at least.
