User blog comment:MisterWoodhouse/Uniting the Fandom and Gamepedia login systems/@comment-31955138-20200721171559/@comment-24006128-20200722193259

And I'm sure those providers have different architecture than we do.

The fact of the matter is that the GDPR compliance effort for the legacy Fandom platform was deemed excessive for multiple skins.

The UCP, however, is looking to change things up in the area of customization. We'll have more on that in Phase 2.