Yes, but that's simply a failure from having no ability to define abstractions.
Separating form/design/layout from content is one possible abstraction boundary, but it's just one arbitrary one, so it's kind of strange that they tried to bake it into the platform instead of making it easier to define whatever abstractions are meaningful for you.
Just explaining that what you consider a "strange" design choice is actually deliberate and carefully thought out, not defending it--for all I know, it might have been carefully reasoned out but the wrong conclusions reached--but the results stand for themselves: a platform that is now synonymous with "the Internet".
Yes, but that's simply a failure from having no ability to define abstractions.
Separating form/design/layout from content is one possible abstraction boundary, but it's just one arbitrary one, so it's kind of strange that they tried to bake it into the platform instead of making it easier to define whatever abstractions are meaningful for you.