But random UI designers know best.

If he actually cared about making the fediverse less toxic, there are ways to do that. Working with instance admins to create up to date filter lists would be valuable, effective, and something no one would take issue with.

Or even being up front about it would have been fine. There is no mention of the blacklist on the main page of the github. If tesseract were a sanitized, curated fediverse client that described itself that way, it wouldn't be an issue. Clear disclosure and consent count for a lot.

Instead he literally built a trojan horse for the fediverse. Unjustifiable.