There was a news blip about the closings on another automotive website. They blamed it on private equity instead of diversifying their content. I personally think it's more than just these things, so I went to their landing pages to find out more.
The first thing that came to mind was that I've heard of two out of the three before, Motor Authority and The Car Connection. I never heard of Green Car Report. I have to be honest and say seeing GCR blew up one of my theories that the sites were trying to emulate the "Big Three" (Car and Driver, Road and Track, Motor Trend). I was going to argue that the internet has shattered the mold of the "Department Store Magazine" and that people have put themselves into "camps", but Green Car Review is a dedicated magazine for one of those camps. It should've done well in its group.
When it comes to YouTube Channels, do you go to their websites? (Obviously you come to the forums or you wouldn't be here.

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Would TikTok and YouTube Shorts have been a good platform to make commercials for these e-zines? Should they have promoted themselves on other enthusiast channels and forums? Does Ad Blocker hurt their survivability?