Exactly right. 40 years ago, the dollar became totally in flux. No definite measure. Sorta like if a one foot measure (12”) changed daily. Today a foot = 11”, tomorrow it’s 11 3/4”. It would mess up carpentry, building, etc. Same concept. Credit to John Tamny for this analogy.
But it is always worth less than in years past, like your foot shrinks from 12" to 11".