I believe part of your question was answered here[0].
In short: on this platform merchants have the ability to process a transaction that Bolt suggests is likely to be fraudulent (in effect ignoring the warning).
In a general sense, all merchants have to balance their false positive rates with their false negative rates in a way that makes sense for the products/services they sell.
[0]: https://news.ycombinator.com/item?id=16217020