I love RSS, I've built News aggregators which consumed RSS feeds in the past i.e. before Social Media took over as News aggregators and News outlets stopped car

I love RSS, I've built News aggregators which consumed RSS feeds in the past i.e. before Social Media took over as News aggregators and News outlets stopped caring about their RSS feeds(Not sticking to standards, garbage feeds etc.). I'd like to get into News aggregation with RSS again now that I think there are some significant population who think Social Media may not be the best way to consume news. So I made a cursory exploration of the status of RSS feed support for major news outlets. To my surprise, Many do still support RSS incl. those with paywalls. It's surprising because AFAIK Google doesn't mandate RSS to index their news, Apps like Feedly which started out as pure RSS aggregator went onto HTML parsing of major news websites by the time I abandoned my RSS feed aggregation apps. Are the news outlets still supporting RSS because? 1. Legacy systems which depend upon RSS. 2. There have been a rise in demand for RSS feeds. 3. It's the right thing to do, for journalism. 4. None of the above.