I think that there are different types of problems as well as intricate complexities involved in such problems, that people refuse to acknowledge.
As you say, everything is a temporary problem to these people. Of course, there are temporary problems. Getting fired at work in the process of hunting another job is a temporary problem, because you know you wanted a different employer anyways and will continue to work towards that goal. Worrying about an exam is a temporary problem because the trial will come to pass and typically resists are allowed when one fails. A high school breakup's aftermath is usually temporary.
Having chronic incurable illness is not a temporary problem. Losing loved ones you cherish one after the other is not a temporary problem- the pain of grief may lessen with time but it will always still be there. Trauma/abuse and their effects are not temporary problems. Cyclic poverty is not a temporary problem either.
I think many of these shiny happy people are either incredibly privledged or have their entire life's purpose fixated in a dogmatic system of beliefs like religion. They always think our situation is far away from reality and can never happen to them, or as Schopenhauer eloquently puts it:
"The most effective consolation in every misfortune and every affliction is to observe others who are more unfortunate than we: and everyone can do this. But what does that say for the condition of the whole?"
I realized the mental health system was a sham and full of charlatans after I was prescribed by 16th antidepressant and turned away by the University therapist for having," the most complex case they've ever seen." Yet when I told others about my pain, they blamed me for having a negative outlook. That my worldview was the issue, and not the laundry list of health issues, nor a lifetime of childhood abuse and incredibly traumatic events.
I realized that this was it. This was the pinnacle of the so called help that was offered. There was nothing more that could be done, and if I dare tell others what I truly feel, they'll lock me away and throw away the key.
Even when I tried becoming more social, I realize it is all fake and people don't care unless you provide them with endless hedonism. Other people will never understand. They repeat the same platitudes and copy paste the same suicide hotline numbers. My relationships feel just about as real as a silicon implant. I know when I ctb they will repeat the same things, that I didn't want to "try to get better" that I "refused help" if only I had reached out etc.
I wouldn't wish this sort of existence on my worst enemy, but sometimes I wish they could have even the tiniest taste, a little glimpse, into what I deal with on a daily basis, then maybe they would have some goddamn empathy.