Well, I'm not the most anal guy in the world about stuff, but I don't consider myself careless either. Point is, I've never had a problem with the split rings on RC STX jerk baits. Caught hundreds of LM, SM and K's and won quite a bit of money on them. Donna and I have both caught fish up to 7 pounds on them.
I gotta say, I throw my jerk baits on 8-pound Maxi or P-Line mono, and I don't believe you can straighten those rings without breaking the line first. Besides, if you're using the right jerk bait rod and playing the fish right, you just won't put that much stress on the rings.