I can’t agree with your point. I tried to upgrade one of our Wix Editor sites to Editor X before, and Editor X is basically a failed product. That’s why Editor X only sustained for such a short time before Wix developed Studio to replace it. We are in the same situation now, needing to rebuild a site if we want a responsive one.
And one question for you: Why did Wix disable the Wix Editor to Editor X migration? Is this a technical issue or a business consideration?