Hi. I really don't think so: I've used a total of 14 jiffy with not even a problem on that side. The roots always pop out from the net even before i put them in the first pot. And, to think about how much strong a root is, the 2nd pot i use is made of coco choir (filled with regular soil). When the plant is big enough i put the whole pot in the final fabric pot, all matrioska style, and the roots simply pierce it with no sweat.
Think about it: roots destroy concrete too!