VR also gets a lot of hate, and they definitely dropped the ball on user-facing software, but Meta is doing very substantial, deep and valuable long-term R&D on VR hardware. They are also doing a lot on systems software, with their OS and all the low-key AI that enables excellent real-time tracking, rendering and AR.

It might not all be open-source, and they are doing it with an expectation of long-term profit, but they are earnestly pushing the horizons (pun intended) of the field and taking-on lots of risk for everyone else.

It's undeniable now that they are a serious and innovative engineering organization, while Google is rapidly loosing that reputation.