You can route a BitTorrent client through a VPN. I do this with Docker + rtorrent + Wireguard. I agree silently ignoring proxy setting is not cool but assuming it is used for privacy reasons is a stretch. I'm glad it avoids people route Deluge data through Tor though that also would not be the sole purpose.
Thanks for pointing it out — yes, using “nobody” is exaggerating and I’ve edited it.
Note that I’m not demanding anything. Or complaining that it isn’t fixed. How could I? The person developing it, may have their reasons which I don’t know about.
However I am pointing out the issue, because there are more secure alternatives out there, if privacy is what you value.
Which means that everybody who either doesn't use a proxy or does not care whether it's exposed what they are downloading can happily use Deluge. Using the term "nobody" you are exaggerating quite a bit, don't you think?
Instead of complaining and demanding that others fix something for you for free who are not affected by it, please consider contributing a fix yourself.