I will not debate you on that one. According to the Open Source Definition (https://opensource.org/osd) Defold is only 90% open source. It's a lot better than the 0% it was yesterday.
Like seriously according to your comment history you're product owner of Defold. So if you're care of success of Defold why do you need this false advertisement?
If your company worried about someone making money off editor you can just keep this part proprietary while releasing the engine under OSS-compatible license. There is plenty of "open core" projects out there.