Yesn't. Relays still have to be maintained by someone. The same goes for shopify backend. The fact that you are not the one maintaining it doesn't mean that it doesn't have to be maintained.
Pushing whole e commerce sites to the relay means that the relay operator would need to maintain a site (possibly not only one) for someone for free or litteral pennies
Relay operators are already running those relays.
They don’t have to do anything special and aren’t obligated to do anything special with any particular event over another. That’s on the guy setting up their e-commerce site to use a diverse enough set of relays to overcome any one relay’s issues.
I imagine a basic e-commerce site using Nostr is listing stuff out represented as events and zapping stuff you want to buy. There are a constant stream of kind 1 posts that are infinitely heavier than that going on day in and day out.
