I'm upset because it seems like so many things are happening to IU at once this year.

It seems like everything they had been holding back—from the drama controversy to the breakup and dealing with malicious comments—has exploded all at once due to their health.
Seeing them post an apology while blaming themselves for ruining everything makes me feel so sorry for them.
The fans are fine, so I hope you don't think about anything else, relax, and take care of your health first.