[Fallacy of appeal to xkcd]
It’s rare for people to only be facing a single issue, and the degree that any one issue is impacting them can very wildly. Still, dismissing similarities because of differences in intensity is counter productive. Grief counseling often involves encouraging people to go through their daily rituals, but all of those transitions can benefit from similar advice.
Sometimes, for some people. For some people, when they express their feelings, and the response they are met points out that others have it worse, they sometimes feel worse. It can sometimes feel like a dismissal, invalidating their feelings and experiences. I'm using qualifiers here, but I personally think most people want to feel validated.