Thank you for sharing.
I found my shadow profile on maven, too, spanning 5/17/24 - 6/8/24, but not every one.
They've stripped hashtags from the bottom of my posts. Image AltText seems to be missing or inaccessible there. And, they add their own imprecise tags.
I wonder if hashtags in the body of a post would stop them, get stripped – bastardizing the content, or simply be ignored? What about Emojis? I'll throw a hashtag into today's post and see if it turns up there in a few days.