The thing is, there are more than 12 constellations the sun can pass through. Some are smaller, or have fainter stars, so they get ignored. The biggest is Ophiuchus, the serpent-bearer, which is a huge constellation taking up quite a bit of celestial real estate, and in fact the sun spends more time in Ophiuchus than Scorpius. Scorpius has brighter stars and an obvious scorpion-like shape, so it gets better press.
So no, NASA didn’t add in Ophiuchus or change the zodiac or anything like that. Ophiuchus has been around this whole time, but has been ignored by astrologers. They’re the ones who should take the blame for all this, not actual scientists who don’t even think astrology is worth wrapping fish in anyway.
Worse, there aren’t really 13 zodiacal constellations. By some counts, there are as many as 21. Not only that, but Earth wobbles like a top, very slowly, and over centuries that changes the dates the sun is in a given constellation. If you were born in late March in ancient Greece, you would have been an Aries. Today, you’d be a Pisces.