The real danger is rather subtle.
The vast majority of people are ignored.
However, if you become a public figure and gain a following then they will take a look at the data they have collected over the previous days, weeks, months, years and see what they can do with it.
What is happening is a “chilling effect” where folks with street smarts know it is unwise to stand out from the crowd.
This. The internet is forever, and so is the NSA. Leviathan is evil, yet we still go about our lives, and vote like it matters.