Speaking of "wherever you get your podcasts", it's interesting how this is working entirely fine for podcasts — and has been working entirely fine for years — yet somehow the fact that fedi has <scare-quotes>instances</scare-quotes> is supposedly an impossible to overcome hurdle that will never work for "regular users" in the "real world". 
To be fair, the situation is somewhat different: in podcasts the podcast publishers are more knowledgeable about the infrastructure they use, and often have enough slack to explicitly deal with various avenues of delivery (e.g. register it in iTunes). Here, the only party that would normally have similar amount of knowledge and maybe slack are instance admins, but (a) they are more hidden participants (b) they are likely to have negative slack due to instanceization of moderation duties.
@robryk the point I was making was about the possibility of such system existing and being usable and used by "regular people". Clearly, it is.
Ah, you mean the generic "get this from whenever" being a possible stable solution in the ~current world?
I guess I agree, but I still think that it's overly optimistic to say that fedi is of the same enough category to predict things for it from this: if we were to look a small number of decades in the past, the magazine distribution system via stores/kiosks (as opposed to only via a post subscription) was very popular and worked well, but I struggle to remember any working physical bulletin board systems from my childhood.
@robryk fedi is not the same. But the specific "argument" used against fedi that I am referencing here is "too complicated because different providers of the service."
Clearly it's bull.