I think we've had this discussion before. That's the internet 2019 style really. Gone of the days of easy to find useful information. Now it's all about looking good on a small screen. Those of us who prefer using laptops to access information (as opposed to conduct simple transactions) are rapidly becoming dinosaurs.
That's how the old website worked as well.A brief look at the “new” OW site it appears they’ve (largely) only listed lounge access for carriers that actually operate to the airport. And not listing access for non-operating airlines (which pax with status in those FF programs of course have OW Status access to lounges).