Those who have borrowed money benefit from inflation though. If you have student loans or a mortgage, high inflation can work to effectively reduce how much you owe if salaries/wages go up with inflation.
Wealthy people own assets that keep up with inflation. They may have 10% in cash which doesn’t keep up with inflation but in general most of their holdings either keep up or outperform inflation. Poor people have wages that don’t keep up with inflation unless they start job hopping. The poor are typically more affected by inflation than the rich.