It’s Andreesens all the way down.
The abundance movement is not a grassroots group of people, it’s a lab creation of billionaire/donor types. Andreesen is one of them, that’s the context for the link. Reid Hoffman is another.
These people want to find a way to distract from the appeal of progressive policies of the kind put forward by Lina Khan and others who actually attempt to directly take on the concentrated economic power that’s strangling normal people in this country. They’re the ones doing the strangling.
It’s propaganda, a PR project by oligarchs. It’s fundamentally done in bad faith and there’s absolutely nothing obligating me to take them at face value.
Nothing in your assertion addresses the actual merits of the abundance mindset as described in Klein and Thompson's book.
If you want to argue that Andreesen is co-opting or manipulating those ideas for his own ends, that's something else.