Stripe started really really well with its developer, library and documentation support. In fact I think that’s a very large part of their initial success.

At some point they lost that focus and dropped the ball. For example for a very long time they had no direct support for reactjs even when it was hugely popular, instead you had to go find some third party library which is a terrible thing to have to do for implementation of payment code.

Maybe they’re improved and started supporting actively the technologies developers are using.