I don't think he is arguing against independence for publication. He is instead arguing against the app store restrictions on account that they are equivalent. It is not illogical to point out an hypocrasy if the point is that his own arguments should be more broadly applied. The tone was unnecessarily ad hominem but not the overall argument.
Yeah, my comment was a bit more emotional than required and ended up sounding like an ad hominem, but the overall point was that people (not just the author of the piece) vote with their wallet, and they voted that gatekeeping is OK; mostly they have been showing that "convenient"=OK regardless of how many privacy issues it rises or how much free speech could be affected.
Still, I understand the point of those who consider news publishing independence to be more important than software publishing independence. But I think they may be missing the bit of irony (regardless of AMP) that Google is still the search engine they use to find those news, Google may as well delete a full domain from their search results and make a site disappear into oblivion. But at least Google-search has been forced -in some cases- to keep some level of neutrality there. Apple is just freely deleting and adding whatever they want to iOS/App-store, with some of their apps having access to APIs no other app can (e.g. Safari), which is as monopolistic as software gets.
Which is precisely the case here.