I have the non-Pro edition (Home?) and I have the setting. I think this is a US-vs-Europe thing?
Recently someone’s laptop broke while visiting the Mexican beach I was living so they bought a laptop from the local shop. The Windows install was in Spanish and the language options offered no other language to choose from. All of the tutorials online showed menu options that weren’t there. I tried helping them change it to English.
Apparently, for some reason, Microsoft really does offer single language Windows—I found after some digging.