Mostly this sort of thing is not a problem and pretty common in internet concerns trying to function worldwide. Just be aware that a data breach could occur and cost you the machine you used discord on, even without the app. Also note that anything you say could end up anywhere and you MIGHT have no legal recourse to defend yourself.
99.99% percent of the time nothing will ever happen but the one in a million will supremely bite the end user in the butt. Be cautious and aware of the possibilities.
I use discord frequently myself but i know how to mitigate the risks to my hardware and accept that the internet is the internet, anything i say will live forever and be interpreted as stupidly as possible by somebody.