Stripe is an EU and US company dual headquartered in Ireland and subject to the same EU regulations as Ayden. They spend a lot developing and maintaining talent in Ireland.
I'm sure Stripe EU is subject to EU regulations, just like Adyen. But unlike Adyen, they are also subject to some US regulations due to being a subsidiary. And, highly likely, they run software systems build by their US counterpart, meaning data exfiltration or even sabotage is trivial.