The article hints at some of the problems that have caused problems for the Ranger units since the modern Ranger units were formed in WW II. One has to take a close look at Ranger history before dismissing the article entirely.
Many conventional commanders tend to misuse Ranger Companies and Battalions. It happened in WW II, Korea and to some extent in Vietnam.
Placing the Ranger BNs under SOCOM, helps to reduce such misuse, however, they still face demands from theater commanders and pressure from local conventional Division commanders, etc. when they are operating in their AO.
Of course, it would also appear at times that SOCOM falls prey, to the thinking of the Commanders influence that the article talks about as well as the quest for better funding, etc.
The fact is that both the Special Forces Groups and the Ranger BNs will always be in danger of misuse as well as actual deactivation if many high ranking people got their way.