In my opinion the emotions should be edited out because then viewers vote on 'feelings' and 'personality' rather than 'performance' and 'technique'.
Although, without emotions the audiences will not share the connection with dancers. In my observation Indians are masochists addicted to drama and atyachar so no TRP without it.
I'd be first to get kicked out if I were ever on a reality show because if my family ever showed up, I'd ask 'don't you have anything better to do' and if my mom cried I would tell her to leave and come back when she had a grip.