I can't prove a negative. So you would have to prove the positive, what harm came from this app?
Would you say that the current political climate has been harmful? I would. I would not only say that, but I would also say that it's come about specifically because of data collection practices which have enabled data analysis of entire populations in a way which has never been seen before.
While analysis of populations is not inherently bad by itself, the outcome certainly has been, particularly because the abilities and effects are so new that there's little or no law governing people towards positive effects for society as a whole. Without those laws, the effects become geared toward benefiting people at the top either directly (company CEOs) or indirectly (capabilities sold to those who can afford them).
Seriously, look at the state of peoples finances. That's the cause. Look at the amount of money the rich have compared to those who voted for Trump, Brexit, etc. Look at the quality of life. This has been coming for a long, long time. Blaming on Facebook and Twitter is not very insightful of the state of affairs in the world today.
My understanding is the entire Cambridge Analytica thing is about privacy and not actual harm from the Facebook aspect.
At scale, such behaviour cannot possibly be good for democracy.
But it seems very much like there is an attitude like working for Facebook or Google is amoral. That I don't believe. Especially when there are companies sell software to track phones secretly to countries like Iran. That's on the border of amoral.
Then why do you assert it as being truthful?
The history of FB's data collection practices is replete with "harm".
And prove the "harm" in its data collection practices. Since you've been very specific in data collection, I will expect your response to be about data collection.
