Writing can be a useful tool for working through and expressing tough emotions, especially given the emotional rollercoaster brought about by the pandemic. But writing can also lead to more harm than good. Writing is a solitary pass-time and writers will often spend a lot of time alone. At a time where people have already been forced physically apart, retreating to a private space to write a short story encourages anti-social behaviour at a time when we need human contact more than ever, even if it is mostly virtual.
Spending hours alone, inside, and at a desk staring at a screen trying (and perhaps struggling) to write can have the opposite effect of emotional expression, leading to depression and and disillusionment.
The pressure may add to the existing anxiety and create added emotional strain. Writing can be a great outlet for emotional expression, but it requires a balance. Writers warn of writer's block and writing fatigue, and caution new writers to take the time for self care, taking regular breaks, ranging from hours to days to weeks, in order to relax and recharge. 
Writing is not for everyone, and for some it can do more harm than good.