How does this hatred work? Does she keep a leaderboard? Does big tech include foreign companies? I don't know much about this person other than the usual media bio sketches. Where can I read more?
It works through frivolous lawsuits attempting to block everything Big Tech does regardless of reason, eg the acquisition of Within, which has no justifiable antitrust case whatsoever.
Within is an app developer whose apps compete with apps owned by Meta, run on hardware owned by Meta, and are sold in an app store owned by Meta. Why does this confuse you?
There is no viable anticompetitive case for VR as it is a nascent industry which barely exists. Furthermore, Meta is far from the only player in the VR space today - Valve, Pico, HTC, Samsung, and Microsoft amongst others all play a role in the VR ecosystem.