I remember learning about him as a kid in Texas history, but he wasn't turned into some larger than life character. We learned what history says about him, that he was part of the expedition, and what he did when they were shipwrecked, but that was it. The guy was obviously educated and intelligent, and history should give him his dues.
That said, this is all part of a massive push by white liberals and black supremacists to erase white history, one piece at a time. This is why you see them now claiming that the ancient Greeks were "African" which ALWAYS means they were black. They've already done this with the Egyptians, including Cleopatra, Carthaginians, especially Hannibal, Vikings, Britons, etc. etc. etc. And don't forget the 1619 project or even more fanciful claims such as those who say that all of those living in the Americas before European contact were "African" because people from sub-Saharan Africa sailed across the Atlantic and colonized the Americas, not people from Asia/Siberia.
They are rewriting history to say anyone from Africa throughout all of history is/was black, even though people who inhabited North Africa are not black and never were black. (Yes, there could have been some black people living there, but they would not have been a consequential percentage of the population.) Many were of Greek, Roman, and Phoenician descent and of course Egyptians. Later of course all of North Africa was conquered by the Muslims Arabs, and the populations overtime intermarried.
It is likely that Esteban was of mixed race descent, like most Moors, and was not black as in Sub-Saharan African black.
"If you will not fight for right when you can easily win without blood shed; if you will not fight when your victory is sure and not too costly; you may come to the moment when you will have to fight with all the odds against you and only a precarious chance of survival. There may even be a worse case. You may have to fight when there is no hope of victory, because it is better to perish than to live as slaves." - Sir Winston Churchill