Hi Antivenom, and not dumb question at all, in fact thanks for raising it, as didn't knew about that issue.
Just for others reading this, i'll explain that usually when starting deluge from desktop shortcut or start-menu, then the icon showing up on taskbar is the correct deluge icon.
To make a "quick-launch" icon, probably just named taskbar icon, or pinned taskbar icon, or what have you, in win10 these days(and not 10 years ago

), then i'd just drag the desktop shortcut, if having such, down into the taskbar, and an entry is made there also with correct icon, or do the same from the start-menu shortcut, if not having desktop-shortcut.
The issue with this, is that it works fine and looks correct, but when clicking on it, then makes a new adjacent, also correct icon, so you now have two, one for the "quick-launch" shortcut and one for the running app.
Also, another issue is If not having any shortcuts for deluge in taskbar, and starting deluge and rightclicking icon showing up in taskbar and selecting "pin to taskbar", then it will stay there after ending deluge, and will not have correct icon(pythonw.exe), and also will not work when clicking it as nothing opens, as links to pythonw.exe and not deluge.exe unfortunetly. If rightclicking and again rightclicking on the python entry and selecting properties, then you can change the shortcut to deluge.exe instead of pythonw.exe, and link will work again, but will still make an adjacent temporary icon next to it on taskbar for the running time of deluge. The icon can be changed from 'rightclicking > properties > change-icon > INSTALL-DIR\Lib\site-packages\deluge\ui\data\pixmaps', but as said, might as well drag desktop or start-menu shortcut to there instead, to save these steps for you.
Lastly, if dragging deluge.exe from install-dir and down onto taskbar, as probably Antivenom did if I had to guess, then the icon is wrong and another adjacent icon comes up whenever running deluge from it, like the previous examples. Again, might as well do it the other way I stated previously, but also again, can be fixed by the change-icon method described in previous paragraph.
I honestly don't have any solution to this issue, and if finding such a fix, then will of-course implement it and make a note of it here, but this is an issue of the way I make this setup of deluge in these installers, which isn't the standard official way, as not ready yet, unfortunetly. When running deluge.exe, then it also opens pythonw.exe to start the functions called by deluge.exe, so hence makes a second shortcut when run, as thinks it's two seperate components running.
I could of-course change the icon of pythonw.exe to deluge's icon too, and the exe's of all components(currently I only changed the shortcuts for those, instead, in start-menu and desktop), but again, this wouldn't fix the issue of there becoming two icons in taskbar whenever using quick-launch/pinned-taskbar-item.
Sorry about that, and again, i'll update if coming up with, or finding a fix, but not too sure it's possible, atleast for me, and with way this is setup.
@all, btw, I made an update to first post describing that this is not done in ordinary professional manner as still issues with that, and just something to try in mean time if wanted, and so not a recommended solution and actual recommended approach would be latest released official installer, or build yourself from source deluge, using official docs or e.g. doadin's repo for building deluge2 and all it's deps from source through provided batch-files. I wanted to have the first post as short as possible and to the point, so that's why I never added such in first place but in hindsight I should have done, as pretty important notion nonetheless of course, sorry about that. I have said this though many times over, throughout this thread, but cannot expect anyone to possibly have seen that of-course. Also, the reason that I reiterate this again, in depth, is additionally because of pinksherbetf8 comment, then also because was recently shortly discussed/raised in that
#3201 ticket of issues with deluge installer availability.