Not hearing the difference is absolutely a thing. I took a university class on the nature of language and I still have clear memories of some of the example videos we watched when we studied the phenomenon. It’s a very “how is this possible” kind of feeling.
Iirc it just depends on the language(s) you spoke while developing. You could probably hear the difference when you were very little.
This is so great to see, and the timing is perfect.
My son already calls the PC Steam, as in “we played game A on Xbox and game B on Steam,” so maybe by the time he has a PC in his room Steam really will run the whole platform.