You can also turn off @everyone/@here/@username in right-click -> notification settings -> 'Suppress @everyone and @here'. Like the sibling said, doing this for every channel is tedious.

I want to change my global settings, not server settings. I'm on dozens of Discords and join/leave them and change their order on the sidebar all the time. Going through each of them (and remembering to do it every time I join a new one) sounds like a nightmare. Every time I hear/see a notification that I don't want, I'd have to go through all those dialogs for all of my servers? Nope, not gonna happen.

From your original comment I assumed you actually would want to know how to do it, I see now it was simply whining.

edit: sorry, this came off more aggressive than I intended. I just meant that I thought you were looking for a solution, but you were actually critiquing, so I felt like I'd wasted the time trying to help. Sorry to be an ass.

I was replying to a post that praised Discords UX. I agree, it's mostly excellent, but there are points that deserve critique, which prompted this response.

If you feel like that's whining, well, as an UX designer I'd welcome feedback on what could be improved.