All of that sounds more like an argument for apps that are excellent at: 
1️⃣  Replies on [ANY CONTENT TYPE]  
(without them having to actually display the content properly, let alone let users interact with it)
2️⃣  Aggregrating [ANY CONTENT TYPE] around the niche communities that are interested in them. Making discovery something that organically happens, instead of something you have to start iNfLuEnCoRing around for in the kind 1's you're blasting out to god-knows-where.