I mean, direct-linking to things from a product site is still a thing; and—due to Steam technically being a website—discovery by search-engines indexing the page is still a thing. But also, there's no reason there can't be things like "App Store channels" where you can subscribe to a given app reviewer's "view of the world" (i.e. a store scope containing only the stuff they like, and—with less weight—the stuff the people they follow like, recursively); and then browse those, or a front-page that's the union of those. You could even automatically generate such channels from existing app-review sites/Youtube channels/whatever.

The problem is that you're increasing the workload on everyone who wants to use that market by forcing them to filter out more crap.