User blog comment:Ducksoup/The Future of Infoboxes on Wikia/@comment-3544775-20150822141403/@comment-3542404-20150822142529

The migration never said it carries across style, that's done in Special:CSS.

Sure it's a pain in the ass to get the hang of and it lacks a lot of intuitive features from the old one. But there's surprisingly some benefits to using it.

Personally I've nearly managed to recreate the original style in our draft infoboxes. It's also a lot easier to apply style changes on a large scale through CSS because you don't need to repeatedly add style code for each field. It has its pros and cons.