Personally do not think SH Y seats should recline (nor J in most European carriers - same seat pitch!) - LH naturally should.
In a perfect world there would be an electronic lock, which allows recline when cabin lights are dimmed for sleeping.

Even working on an iPad can be a challenge in SH if someone reclines (Y/J) - with bulkheads the only option to avoid this, which often are unavailable when booking business trips on status heavy routes.