The whole post shapes the context, even the whole sentence helps already: It just "happens" to be also available to select for the end-user after product-launch. Supporting DNG would mean adding an extra feature and then hiding the RAW-option again.
--> Even if DNG-support would be adopted as a feature for the end-user, the proprietary RAW would still need to be maintained because it has a core-purpose during development of the product. The utilization AFTER that is the product-feature
None of this negates the value of RAW for photographers, this is completely beside the topic
Hence I, the person who wrote it (!), keeps clarifying the intended interpretation by (re)iterating that noone disputes the value of RAW for photographers.
It is up to you now to ingest new information and adjust your interpretation, a process I'm afraid I can't help any further with.
