To each his own I suppose, that what great about having the freedom to choose.
I personally think it's $22 well spent ($25 - [$1.50 x 2]) as compared to the NAPA route. IMO the fact that the bolts are stepped permits for a more percise centering of our "floating" rear subframe for an alignment alignment.
A few tidbits that possibly equate to something is the fact that probably everyone who has installed the lock bolts has to "shift" the rear subframe 3-6cm to get the bolt hole to line up. Also, after installing the bolt if you take the car back to the alignment shop for a "free warranty re-check"

the tech gets all bent because he thinks you hit something hard and screwed up the alignment he just did a few weeks before.
The NAPA route is better than having nothing at all, but stepped bolts are better than the NAPA bolts.
***Whiteline's recommends locking the subframe for track use only where high speed heavy transitions can amplify the movement of rubber bushings hence the original purpose of polyurathane bushing and other pieces to solidify the chassis, on a daily driver this is not necessary.