If the logging analogy holds, then I don't think this is purely an issue of profits above all - it's more an issue of short-termism. If you are Facebook, you could reasonably stay relevant, focus on content quality, and shift to a profit model that looks a lot more like Morton Salt's - steady as she goes. In the long run, sans other goals, that might be the rational thing to do.

On the other hand, if you are looking to preserve stock price in the short-term you need to at least create the illusion of sustainable revenue growth. And there is a lot to be said for this later strategy if you don't really want to run Facebook in maintenance phase. Seems that Mark and Co. might not be all that concerned about "deforesting" Facebook with ads because the end game here is the Metaverse...?...