OCR is a technology.
Cryptocoins are a community. The _SAME_ people who pushed crypto have now moved into the AI sphere and are hawking AI.
Its like all the snake oil salesmen of the 1800s suddenly discovered that cars are selling and have become car salesmen. That doesn't mean that cars are a scam, it means that many, many people trying to sell cars to you are scammers.
Having our guard up against hucksters, especially when the great community of hucksters are obviously moving in lockstep to say the same thing (and coordinate their arguments thanks to the internet / meme culture), it makes it easy to pick out when to be on guard.