Yep that’s what the page says alright.
The Toda stroker kit uses all Toda products except the crank and that is from the B18C, as we all know the B18C crank has a longer stroke then the B16A crank so by dropping in a B18C crank into a B16 you will need to go with a shorter rod. The shorter rod length is where the side wall loading comes into play
Short rods = high sideload
Long rods = low sideload
I’m not saying you cant do it all I am saying is that I don’t think its worth it as it will shorten the life of the engine, also of note the shorter rods will NOT make as must torque as a longer rod setup.