They have never asked me anything, so I suppose they don't know about this particular activity. The moment they start freezing my money, asking about the activity, like Paypal used to do in the past, it'd be a good time to abandon Revolut.
They 'll never do this, unless the government asks them to.
For the most part, you 'll be good if you keep doing what you do. I was doing it as well a lot, but I just thought, since Revolut knows who I am, is there a chance that I may have an issue?!
Food for thought.