Sure, there are plenty of researchers working on fanciful daydreams. They pursue those goals at behest of their employer. You attempted to make a distinction between the employer and the employee's goals, as though a Distinguished Engineer at Microsoft was just playing around on a whim doing hobby projects for fun. If Microsoft is paying him $1m annually to work on this, plus giving him a team to pursue the goal of rewriting Windows, it is not inaccurate to state that Microsoft's goal is to completely rewrite Windows with LLMs, and they will earn negative publicity for making that fact public. The project will likely fail given how ridiculous it is, but it is still a goal they are funding.