This is pretty honest and acute description of the industry landscape and prediction going forward.
I think DS has been abused by some people as an umbrella to not produce qualify code, yet they somehow they put themselves in higher regards in the value chain.
However I do see there is a real position for DS in the industry, but it should be a specialization of senior SDE when they decide to further their career, not its own job family. Otherwise it should be renamed as data analyst for clarity.