Not to argue one way or another but I'll chime in with my 2 cents if anyone wants to cash in on it that's cool if not whatev.
I've never used these Jiffy pucks with the netting around them, I've used their plugs for clones and such. However I am a huge fan of these non-woven fabric pots I found. They're approximately the size of a soda-can, and made from a similar non-woven fabric as those Jiffy pucks. Well at any rate when you start thousands of seeds at once and are putting them outside incrementally, the roots tend to grow out of the pots and into the pots next to them if you don't move them around every day. Again, these aren't the exact same thing as a Jiffy puck but I'm pretty sure the material is pretty close to the same and I've never, ever had issues with roots getting locked into one of these pots...
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P.S. - I've used this method for a few years now and have cultivated thousands of cannabis plants this way - Once the plants reach 8 or 10 inches or so I put them directly into the ground, fabric pot and all.