Lots of DaC shops use feature flags for their conditional content. "Conditional Content" is a huge hobbyhorse in component content, because you need conditionals to re-use chunks. How else could the chunk be made applicable to multiple people? In doculandia, it's more common to run into conditional handling that's inline with the document markup - ifdef/ifeval/ifndef in Asciidoc, some stuff in Jekyll, S1000D applic, DocBook profiles, DITA class/ditaval - but I'm not one hundred percent sold that's a solid practice. Moving conditionals into the document layer might have been a mistake. I dunno! I'd love to kick off a conversation.