I find the author’s argument regarding “publications losing their voice and not focusing on the preferences of their audience to meet the preference of the platform’s audience” self-contradictory.  Is it not your own audience that is following you on these platforms? More so, the platforms give you real-time feedback and allow your audience to tell you which issues are most important. 
I find this to be the real issue here. The author is most interested in telling you what is important, instead of allowing you to decide for yourself. …And this is why certain publications struggle with these platforms.