nostr:npub19wdg9zgna9zmyv25qefrcrjh3grkht2kag7yafunzwf0wrg63g7qsmlx5z nostr:npub1x0r5gflnk2mn6h3c70nvnywpy2j46gzqwg6k7uw6fxswyz0md9qqnhshtn 

No, mediaproxy has whitelisting and isn't enabled by default.  I certainly don't proxy media from people I don't know.