I don't think that is what is happening here. Instead, Tesla is continuing the strategy that brought them to this disaster of going all in on driverless. That isn't a bad strategy, but if they get the timing wrong a third time, they destroy the company and they have gotten the timing wrong on this twice already. This strategy has two downsides:
1. AI has no real moat and Tesla has largely pursued commodity sensors, meaning that other than EVs+battery tech (which Tesla appears abandoning), robotaxis have no hardware or software moat.
2. They could use network effects to win, in which case their competitors are not other car companies but Uber and Lyft. Uber has been pursuing the same long term strategy at Tesla.
Now by itself, going all in robotaxi, is risky but could work if they time it right. Tesla isn't going all in on robotaxi since they are splitting the effort between robotaxi and Optimus robots.
It is likely that the experience Tesla gets with Optimus robots will help other robotics companies, but unlike robotaxis where the timing might (but probably won't work), the timing is clearly isn't right for Optimus.
It seems like the motivation here is that Musk is aligning Tesla to a narrative that justify the absurd stock price, even if that narrative isn't reality.