1. The hit television show, "The Six Million Dollar Man", (1973-1977) was about a man rebuilt with mind-controlled legs, an arm and eye.

At the time, serious articles were claiming that this was only a few years away...

My favorite source here is C.L. Moore's 1944 short story, No Woman Born (https://hell.pl/agnus/anglistyka/2211/C.%20L.%20Moore%20-%20No%20Woman%20Born.pdf), which is a fantastic read to this day.

And generations later, this technology still isn't production-ready. What percentage of people missing limbs have one of these?

So yes, I've been well aware of the idea of mind-controlled robotic limbs and even full bodies for fifty years.

2. Your claim is that BCI will replace drugs for depression and cure the whole disease by 2030 is what is impossible.

Today we do a bad job on "curing" depression. I predict in eight and a half years, BCIs will maybe move us to "mediocre" if we are lucky.

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By any standards, there has been a steady increase in depression and anxiety over decades and generations, just as life became more uncertain and more arduous for your average resident of a developed country.