You could as well be wary of the possibility of misinterpretation of your own actual actions, which is consistent with the fear of a dim non-intelligence mixing up your data and others' data.
The same dim non-intelligence, that one spawn of which seems e.g. to think that since you bought a car last month you should be proposed more cars, that dim non-intelligence may decide that since you watched videos of author Tom you subscribe to the ideas of Tom, that if you read the G. you are a junkie and if you read the S. you believe senator Beast has dignity, that if you... I was about to write "if you are studying material about new vaccines before booking inoculation then you must be a vaccine opposer, believing in witchcraft, credulous of any voice, a conspiracy theorist and an irresponsible sociopath": no, this actually I witnessed in real life, acted by adult professionals. So you figure the profiling a dumb algorithm can do.
"The new prejudice factory" may be out of lack of wits, it may be out of "economizing" - like when the order to kill all intellectuals was specified by "you will recognize them: they are those who wear glasses". To some it is not worth their while to discriminate.
One would normally go baesyan to formulate some hypothesis _with the single intent to put them into discussion under the filter of intelligence_, never to take them as plausible. Once.
It is a world increasing in complexity within societies which are abandoning the sense of complexity.