Navigating to a thread isn't much different than navigating to a store.

Upvoting isn't much different than adding to the cart.

Payment isn't much different than adding a comment.

I think the interaction levels are incredibly similar. The primary difference is the amount of images displayed, but that really isn't a significant aspect of web design or Internet traffic in 2025.

When you posit like that makes me think doordash shouldn’t be an app at first place.