To be fair, they predict that transistors will be everywhere including places where they (mostly) aren't found today such as in our bodies and close to our food.
Suddenly those 5G-chips-in-vaccine conspiracies aren't so far fetched anymore.
The tech isn’t what makes those ridiculous. It’s that there are a million and a half less obvious ways to achieve this goal. Starting with the fact we all carry our phones with us everywhere.
When technologists say that transistors (read: computers) are going to be in literally everything, even in people's bodies, some people find that scary and interpret that as a threat. They ask: why do these things suddenly need computers in them? Bodies have gotten along fine without them for millions of years. Why the sudden change? Conspiracies will emerge to answer that.
It's the "natural == good" fallacy. Humans have lived with problems like disease, aging, and death for millions of years. If technology can help to alleviate or solve these problems then that is a good thing.