Probably, the person who wrote this thinks it's perfectly obvious that a small chest is a physical disability
Anger as Russian officials rule small breasts constitute 'physical defect' in judgement on sexist billboard advert, The Independent
Forbidden Words: Taboo and the Censoring of Language
Democracy and the Problem of Free Speech 1439105359, 9781439105351
Russian Police Question Activist for 'Pornographic' Body
Jeremy Story – Denver Public Relations Blog
and Out - OutWeek Magazine
Chapter 3. Culture – Introduction to Sociology – 2nd Canadian Edition
Boxoffice-September.04.1978
Vladimir Putin signs law banning gender changes in Russia, Russia