This has been a tradition since 1st gen. But unless you have had to wait years I don't think its necessary to cry just to please your fans.
I have an umbrella in the trunk of my car that's been sitting there longer than most of IVE members have been alive. Now that's cry worthy.
IVE is my favorite group right now and I'm glad they won and are happy. It's just been a while since I've watched a music show and saw a group win and then cry. So I was quickly reminded of how much I don't like it.
I actually think the groups that lose should be crying way harder than the winners.