They claim they do not use fingerprinting for user identification for advertising. Some people would say that this is a weaker claim than not using fingerprinting.
They have admitted to using those sorts of information for fraud detection to detect fake ad clicks, bulk account creation, or other malicious activity. I also suspect they do some clustering on this data to determine what accounts are related so if there is malicious behavior from a cluster of accounts that appear to be the same user they can act on the whole cluster.
But there is no evidence that they use fingerprinting for targeting advertising.
They have admitted to using those sorts of information for fraud detection to detect fake ad clicks, bulk account creation, or other malicious activity. I also suspect they do some clustering on this data to determine what accounts are related so if there is malicious behavior from a cluster of accounts that appear to be the same user they can act on the whole cluster.
But there is no evidence that they use fingerprinting for targeting advertising.