Incredibly clean, great typography and whitespace. Images are top notch, icon animations are subtle yet effective. Call to actions are small but still noticeable. The story telling is on point.

but!

That header gradient animation. We need to talk about it. How does everyone feel about it? To me, it feels distracting enough to render it superfluous. At times, it makes the navigation text in the header difficult to read (very poor contrast). At other times it is distracting and takes away from the main heading.

With a slightly less distracting implementation it would have been a perfect 10/10. But those above two points make the header an 8/10 which would bring the whole page to a 9/10 for me.

I only hold Stripe to a high standard because... well they have absolute geniuses working on these amazing webpages. Ensuring all text is readable is a must.

See failing colour contrast check here: https://imgur.com/a/jkvqIft. I'm assuming they are controlling the colour cycle of the gradient animation? Setting a minimum lightness/alpha/etc could help here.

p.s. I'm not procrastinating you are