I've only been doing online radio stuff for 31 years or so, so maybe I'm just naive and new to this, but in my experience, when you get into an argument with the owner of a site (that would be Lance) about how his site is run, you can usually expect to lose that argument.
That having been said, this is a discussion site where we value facts over uninformed opinions, and the facts are these:
KNX remains a very profitable format. All news isn't cheap to run, but it also attracts a premium audience that's extremely valuable to a lot of big-ticket advertisers who won't touch most other radio formats. As the major operator of all-news formats in the US, Audacy understands this and doesn't make random changes to its valuable all-news properties without a lot of thought and research.
Over the last few years, it has moved all of those all-newsers to FM except one (WWJ in Detroit), and it's not retreating from those moves, which have kept the all news formats viable as AM fades away.
As for what's on any given station's HD2, it rarely has much reflection on what's on the main signal. LA was unusual in that it had a bunch of early attempts at spin-off HD subs such as KRTH's 50s/60s oldies, but those strategies have largely failed. These days, the vast majority of subs are either national formats like Channel Q, AM simulcasts, or leased out to ethnic broadcasters.