I don't think it was even muting them tho. I'm also willing to believe it was somehow my fault. Like I accidentally pressed some sort of 'copy mute list' button or something mad like that. I don't know lol. I literally just bumble about nostr clueless
The thing is, there has to be a signed event. Which means, either someone else has access to your nsec, or, you pressed a button and followed a mute list without realizing it.