Thanks, that's fair.
I gave a lot of thought to how to word it to not project intention onto Stripe. But I did think one of the most important parts of the story was Stripe's lack of disclosure about the behavior.
I considered and rejected "secretly" and "surreptitiously" because they suggested intention. "Silently" was the best word I could think of to convey the lack of disclosure while minimizing judgmental undertones. I understand that it still does suggest something underhanded, so maybe it would have been better for me to omit the word entirely.