Yess pleeease don't just use discord images... It takes 2 extra seconds to upload it to imgur. You make an account and you can have like infinity private posts and images that will not decay.

One of the huge benefits of forums is that discussions stick around instead of being scattered into obscurity like on social media! Someone might want to know what you were talking about in 5 years! If you use Discord URLs, we might not even know what you were talking about in a month...