Our culture has moved rather quickly from a norm where some degree of modesty was required to a situation where more or less anything goes (other than nakedness)
Just over 100 years ago ankles were considered indecent, while massive amounts of cleavage were not. I remember in the late 50s a bikini was considered quite daring.
Current trends are driven by the fashion and porn industries.
But that's considered fine because it is the current norm, whereas more modest fashions are not.
My only concern about a requirement to cover up a lot is that is may be bad for fitness and for health. In extreme it may prevent healthy exercise. It will also cause vitamin D deficiency.
Other than that it is just fashion, and no more morally reprehensible than walking along the road wearing semi transparent leggings, no knickers and a skimpy low cut top.