But can you get the shipping service separate from the video? I am not interested in a lackluster library of videos, not do I need access to yet another cloud backup, I would gladly spend $40/year on only 2 day shipping membership.

You likely can't because the marginal cost of providing shipping is 100%, while the marginal cost of providing access to a shitty video library is 0 (or close to it, at AMZN's scale)

Since shipping is the main cost driver here, Amazon is unlikely to offer you such an advantageous a-la carte deal.