I've been a long time TC user and if there's the trait it has it's the quality and a high degree of polish. And now looking at the diff and the screenshot of that in-app "Not secure" message, the polish is just not there. It feels like it was something that was slapped together in a rush or by someone who's not an original developer. The SF page alone is a big red flag. If you compare its nearly hysterical tone and ridiculous BitLocker advice to the tone and content of the actual app, they don't add up at all.
This leaves us with a handful of discrepancies between the last good state of the project and what's out there now. So it's either someone else's hackjob or it is original and the discrepancies are intentional. Then, factor in the .exe sig match, and it pretty much leaves only the latter option - the original devs made an absurdly non-TC-like release. The question is "why?"