In my opinion, nobody (edit: who values their privacy) should use Deluge. There's an issue where proxy settings are ignored: https://dev.deluge-torrent.org/ticket/2149 It's been open since 10 years, and this is not a great situation for a torrent client. Where torrents are concerned, proxies are explicitly used to protect privacy. Even in this very topic, someone said they were happy with the SOCKS proxy option in De…
For you and everybody else complaining about this aspect: This is open source software. GPL licensed. It's provided as-is. You are free to use it and express what you think about it, and the maintainers are equally free to do with your opinion whatever they like, which includes ignoring it. Clearly, none of the maintainers found this to be a problem. They likely don't need proxy settings for themselves. And they appa…
When you put something out there, you should strive to do right by your users. It is fine if you do not have time to fix a particular bug, but communication and asking for help should then be your priorities as maintainer. If 10 years of mostly silence on your part have passed, IMHO you have failed to be an effective open source maintainer.
I understand that open source doesn't offer you any rights or guarantees, but it does not have to be written in a contract to care about your software and its particular shortcomings.
Lastly, if you say a maintainer can do whatever they want with their software, I say that users should be free to be critical of it. There is no attitude in OP, they pointed out that a possibly major security bug still exists and people should be very careful about using it. Being open source doesn't mean nobody should dare criticise you.