Yes and the infrastructure to target people individually exists, as noted with the political shenanigans that took place getting Trump into office and the UK to vote for Brexit. Just remember with Brexit, Scots were polled first to see if they wanted indepdence at a time when they thought it would not be possible to get the UK to leave the EU, so they didnt vote for independence. Brexit occurred, and now the Scots want independence in order to rejoing the EU.
The timing of questions asked are important, as any court room lawyer will know, especially if the defendants answer can be later associated and used against them.
The fact this situation is allowed to exist in the hands of unaccountable people and entities namely businesses, is arguably illegal if the laws were to exist against targeted advertising, but we all know big business would b.e against this.
TLDR targeted advertising is a way to psychologically hound people into suicide. Its a murder weapon exploiting the needs of business to be efficient with their advertising spend.
The criminal perpetrators rely on their victims keeping quiet because no one wants to be humiliated, in much the same way if your parents were wrong 'uns they rely on that parental bond to keep you quiet.