Yes you did hear it - the lady in question said so.
I am unsure what else you want as a response to your question - ?
The situation is unpleasant - it appears that the Muslim gentleman has an issue with the fact that it is a woman putting her shoes on the seat - I believe that Muslims regard this as disrespectful.
The woman should not have put her feet on the seat - it is impolite and unhygienic, but quite why the gentleman felt he had to remonstrate is not clear.
Had ne boarded the train ten seconds after she got off, he would have known nothing about her feet being on any seat.