I have the same thing with 'images' -- it seems to be generally related to clients and relays---for instance one can have nostr content 'relayed' by a node owner who filters your content ... yeah ...sooo...its good to have multiple relays...also...some relays...send out alot of spam or hateful --'static'--so that's another consideration --- There are more 'stable' paid relays etc--- I personally am opting to see what the breadth and depth of the organically 'free' relay environment offers and how it develops--typically using iris for client -- really appreciating the growth and very active development happening here on nostr in concert with lightning, bitcoin, and block-chain tech broadly -- emphasis on UTXO and eUTXO