Nobody was able to decloak the server even being in NonAnonymous mode but the bigger issue was the ability to reach the server. At least at the time not many people had a browser that could talk to .onion sites. I don't know how many people use Brave or the Tor Browser these days so maybe now it would be less of an issue now. Maybe I will try it again soon. It's easy to send people to the Tor Onion version of your site using the Onion-Location header [1] to see how many people would be able to reach the .onion side of your site.
[1] - https://community.torproject.org/onion-services/advanced/oni...
These[0][1][2]?
[0]: https://blog.torproject.org/whats-new-tor-0298/
[1]: https://2019.www.torproject.org/docs/tor-manual.html.en#Hidd...
[2]: https://2019.www.torproject.org/docs/tor-manual.html.en#Hidd...