This is the only part I saw that directly addressed the question of "Will the Push for Coding Lead to ‘Technical Ghettos’?"

>...for students of color in particular, whether the emphasis on knowing Java and JavaScript only puts them on the bottom rung of the tech workforce.

The obvious follow-up question is, "Are there significant differences in the way coding is being introduced in schools based on the average income level of the area?"

Yes --> Is there some reason for this? Does one method require more resources? Is one way actually better than the other?

No --> Then, "Technical Ghettos" are not likely to result from the program.