It's not bad at all its not the finest coir I've seen it has a little coir fibers in it and chunks here and there some about the size of croutons. EC was lower than some bags of coco I've bought before. It's a great price for 2.5cft.
I've gotta be honest I never bake my coco this just dosnt make sense. I've been in coco for over 5ish years now never had an issue. Just make sure ya rinse it well, or get a large tub throw your bricks in fill with water once they've expanded tilt it and dump the water out fill it up with fresh water let it sit a minute then tilt and dump the water out again and repeat till the EC is low. I rarely have to do it more than 3 or4 times. Gnats are inevitable with coco and if this is going into a soil mix your still just running the same risk as ya would with any organic median.
Sterilization of the median might kill off some buggies or maybe some pathogens if there is even any in it.....but it also opens the door anaerobic pathogens and local bugs to fill the median. Detrimental bacteria is always stronger than beneficial bacteria.
Adding a preventive soil drench like gnatrol or even just a
neem oil drench will be just as effective as PASTEURIZING the media. You actually don't even want sterilized media for plants. You want pasteurized media, aka composted median. Young plants are very sucseptible to root rot and anaerobic bacteria which forms from not having active strong micro-life in the soil. Adding in something like oregonism xl or even coffee grounds to your mix while composting can erradicate the problem.
Since your adding it too soil already just rinse and toss it in. There is no need to add 100 extra steps for lil to no added benfits.
That's my 2 cents.......