Pardon me, but this quick looks a bit strange. I was trying to help a developer a few minutes ago in a thread where this has been added. It has been a Qt Quick related question, but we have qt-quick and qtquick2 for those. Then, I was trying to visit the tag wiki, but there is nothing present there.
I thought my last change would be to go to the threads it contains, but then I saw some inconsistency. It seems to have become a container for random stuff, unfortunately. It is probably due to its too generic name, and people's misunderstand and ignorance what it was created for. It may have been created for invalid reasons as well.
I cannot personally understand its purpose, hence I would not know how to fix this to be reasonably good. My personal opinion is just to let it go for now, and people may recreate or retag specific threads if that is valuable. That being said, I am willing to listen to what others' think, so take my personal opinion with a bit o salt, please.
PS: Yeah, I am aware of the qtquick2 and qt-quick naming inconsistency, but forget about it now. I will have a separate thread for that relatively soon, hopefully.