I always want to upvote RSS discussions, but damn this is a bad article. The numbers are wrong (feed fetches can be deduplicated and 15min is a silly number), the arguments are wrong (Firefox had a local RSS client, how could it waste server resources), the pretense that Facebook is the web (might have made sense 10 years ago). The ramble about push being disorganized, I can't parse at all.
Then it hits us with an ad for what seems to be an RSS client SaaS (a real one, not the strawman they critiqued). Wtf?