I don’t know about it. We went to Japan before I started learning Japanese and we found that in Tokyo, you can get by easily. Outside of Tokyo is a different story.
Edit: But we did learn the basics - ohaiyou, sumimasen, arigatou, etc.
I was definately surprised in Tokyo how people didnt know English. At museums and the info booth in teh subways it was ok. Restaurants I found to be the opposite. Also its just how they treat you. Not rude but no desire to help you in English which is fine, just different than travelling in other places like Europe etc.
Luckily I knew a handful of phrases already which helped. Going to Kyoto after that was surprising as many more people knew English as I guess its a bit more reliant on foreign tourists.