Well ok - so the Help section in Trello directed me here - there is no way a Community Forum could help, but since Trello wants me to ask my question here, I will.
To the Trello admins if anyone reads:
Exactly 4 years ago (when there was actual support I could communicate with) I asked how I can collapse checklists on the desktop app, similar to how it is done on the Android app.
I was told that the feature is not there, but it's coming.
Great. So when exactly is it coming? It has been 4 years...