I don't think so.......after all, what seems to be the most common method on here is in fact, whoopie slings through the channels, or larksheaded on the knotted/whipped ends of hammocks.....if you want to be safer, use 2-3mm line?
Yeah whoopies, toggles and a marlin spike hitch are very simple, light and easy to adjust. If the end channels are double or triple stitched, you shouldn't have any issues running the whoopies through them. Alternatively you could whip the ends with shoelaces and larks head your whoopies as mentioned above.
Free hammocks are always nice, even a BG one.
That hammock looks pretty similar to the youkon netted one I got off woot. To put in a srl I just put a small hole in the netting a little ways away from the seam then ran the ridge line he through that. Seems to work well. Just make sure the hole is as small as possible and far enough from the seam so it does not stress the hole and make it bigger.