In general I agree with both of you. Filtering can be done either side. Personally I prefer client-side filtering and dumb relays because it puts me in control. I don't get to choose the relay that...
Just to clarify here: I think we're talking about "read" relays, not "write" relays. So it's actually the reader who picks the default relays for the interaction, right? Or at least those relays picked by the receiver are the ones that carry most importance in such interactions.
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