Same with the alphabet. Someone has to teach you what A means and how is it pronounced.

That is quite a normal task in human civilization, we do not come out of the womb pre-programmed to be literate.

I told someone who uses a phone most hours of the day for decades to click the hamburger menu. "What?" I said the 3 lines at the top in the corner. "Oh wtf? I never knew there was a menu there."

In marketing the goal is to, every step of the way, not lose customers. Basically: You want to sell stuff or attempt to teach stuff? If a simple hamburger already is < 100% everything else must be terrible.

More than 0% wont be able to see the little house as a link to the front page while something like "home" would work for an English audience 100% of the time.

And for audiences who don't know English, "home" can be translated to their language.