My take on the oiling system crossover tube for the small block

One thing I will say, is I personally never believed in the theory that the oil travels to fast to make the turn into the galley, not when there is restrictions in the system. Now a wide open passage, then maybe. And most of the blown up sbm I have seen, showed signs of oil starvation to the front to rods first. Just what I've observed, your results may vary
Isn’t it the reason the left oil bank is blocked so oil does t go up that direction to feed the lifter valley by stays at the crank/rods?