I can't see the rationale behind making the web editor only available to Creators and higher. Anyone with a Creator licence already has access to ArcGIS Pro where they can edit their data with the full suite of desktop tools. The real beneficiaries of Web Editor will be Mobile Workers who have been out in the field and are potentially limited by Field Maps editing tools, and wish to tidy up their data when they are back in the office.
The Creator licence type is there for those who wish to create actual content i.e. hosted feature layers, webmaps, dashboards etc. not for those who simply wish to edit existing data.
Please reconsider the restrictive licencing of what, on the the face of it, seems like a really useful addition!