Having lots of stuff requires time. Time to take care of them. Time to worry about losng or breaking them. Time of worry is time wasted in your life.
There’s also financial burden to keep them in good conditions. Dirty things need cleaning. Broken things need repair.
Most things you own aren’t necessary. They are extraneous. They can be a burden.
A minimal life requires less maintenance. Own things that matter to you. Discard the rest.