Thanks for reaching out.
Are you referring to global block? Unfortunately, it's the best option that manually creating that content on every accordion. With global block, you can simply add the shortcode within the accordion content.
Or, you can create a custom shortcode that can be re-use for hundred of products, then simply add the product ID and other information through shortcode attributes. Unfortunately, it's a custom development which we can't cover but that idea will work. I recommend contacting a developer if you wish to create a usable template for your products as a shortcode.