Thomas i read all your posts twice 
Still trying unmix essential from āmarketingā on both sides.
What i see, that fhir involves engineers more into modeling, openehr less. And that is Grahameās point in zulip. fhir is trying to make it āimplementableā from the beginning, openehr separate concerns - modelers from implementers.
I have trauma after āoverengineeredā and āletās
be honest failed because of thisā RIM/V3 and see a lot of similarly of openehr and v3. Iāve heard a lot of similar arguments about semantic from v3 people