80,000 Bitcoin Move Question

Hi, I tried posting this to r/Bitcoin but it was immediately removed for some reason, so wanted to post it here in case anyone had thoughts. Thanks!

I stumbled across these two articles [https://www.cyphertux.net/articles/fr/research/bitcoin-80k-btc-mystere-opreturn](https://www.cyphertux.net/articles/fr/research/bitcoin-80k-btc-mystere-opreturn) and [https://eloise88.medium.com/who-cracked-bitcoin-on-july-4th-408230a70f5d](https://eloise88.medium.com/who-cracked-bitcoin-on-july-4th-408230a70f5d) suggesting that the 80,000 bitcoin moved on July 4 may reflect cracked keys. I am not technical enough to even evaluate the claims, but the mempool linked does appear to have the op\_return messages discussed in the article. I was looking for additional information about this, but couldn't find anything, so wanted to see if anyone has info debunking this as FUD. Thanks for any info!