good point 😂
I'll work on adding that next.
ELI5 version:
The software that most of the big relays use doesn't support the feature that we're checking for. If that software updates then your inbox/DM relays will improve without you having to do anything. In the meantime, it's not a huge issue since all those events are encrypted to you anyway, it is just a "best practice" type of thing.
