Hey @mailtobb,
Looking for us today there is no file I could find called stripe.js and the only reference I could find was for an externally loaded URL called js.stripe.com
Running some comparison tests for us today I searched a product pages sources code with our free Stripe plugin enabled and the js.stripe.com is not loading on the page.

Image Link: https://cloudup.com/cqY_utFJ4zX
The only instance where I could get the js.stripe.com file to load on product pages was by enabling the ApplePay and GooglePay request buttons referenced by Hannah.

Image Link: https://cloudup.com/cEINpejT9Ja
Looking at the source code of your site I noticed js.stripe.com, your page, however, it seems like your pages are minimized and also possibly cached.

Image Link: https://cloudup.com/cjCJFXxUZH4
What your experiencing is not directly related to stripe as if you have deactivated WooCommerce > Settings > Payments > Stripe > Payment Request Buttons no JS for Stripe will load on product pages. It’s most likely due to a site optimization plugin of some kind you have activated.
I hope this helps.