With BTS, I think there has been a shift from the beginning when their official stage names were used more often, to where fans use their given names or even nicknames more often.
I am talking about fans here, not official articles etc.
The only one this doesn't happen to much is Jimin, as this is his official stage name as well. Most fans just write "Jimin".
Even Jungkook is called JK quite often now.
Jin is usually called Jin, but I see Seokjin as well quite commonly.
I see more Yoongi than Suga now.
RM is about equally used to Namjoon or joon.
I don't see J-Hope nearly as much as before. It's often Hobi now and sometimes Hoseok.
In all this, V seems to be the least used. It's almost always Taehyung or Tae in fandom.
For BTS fans: do you agree with this and what do you use?
For fans of other groups: is there something similar going on with your group, particularly if there are members with stage names that are different from their given names?