I take a larger view about what heritage is. I think its a process, written materials, history teaching, and all those things. It's the purpose that's important. Information can overload the viewer. People both hate and love recreation.
History is written by the winners.
Heritage is written more by the losers, because they need something to make up for what they've lost. Some of it is also related to the despair about the physical form of our cities. Some of it relates to a general malaise about the future. It serves regeneration, perhaps self-referencing. It also goes with technologies that can destroy and create.