Then the instance admin holds the private key and can still decrypt.
If you cared that much about privacy in DMs, we should have a “profile page”. Post a PGP public key there. Then you can send PGP encrypted messages to anyone who you have a public key for.
In the early days of the pandemic…and the early days of my Ansible learning…I set up a playbook to scrape several websites for hand sanitizer and Clorox wipes.
If it found one in stock, it would email my cell phone carriers SMS gateway. Tasker would then make a loud audible alert.
Ran for weeks before it found some in stock. And then it did. At 2am. And again at 2:05, and 2:10, and 2:15…
And it was an error on the shops webpage. It wasn’t actually orderable…once it got in your cart, it wouldn’t let you check out.