"open source" has been in use as a term in tech for a long time. It means (essentially) the same thing as "free software". Licences that disallow derivations (or commerical derivations) would not fall under the defintion of "open source" that nearly everyone uses.

You are free to come up with your own defintion of popular, agreed up terms. But this will lead to problems when you're using a different definition from everyone else.