It seems like this is pure labor arbitrage. Growth is gone so the only way to increase profits is by cutting costs, with labor force being the top line item.
The former is a logistics company. They need an on-the-ground workforce in places they operate. The latter are social media products, no local workforce of significance needed.
That said, we are in a world where Amazon is able to do labor arbitrage of software-adjacent jobs by moving them to India. That's been happening for more than 2 decades. Nothing short of new laws levying penalties, or a massive consumer boycott will stop that or slow it down.
If anything, Meta is the anomaly, not the role model. They should be required to invest more given their dominance, rather than being praised for extracting maximum value with minimum local footprint. Regulators will likely close that gap eventually.
I, a strawberry farmer in Florida, should have no obligation to create an office of locals in every geographic location I sell strawberries in.
Case in point - US actively forced TSMC and Samsung to build $65B+ of factories in Arizona and Texas to secure domestic interests.
Meta try very very hard to avoid having any data within Indian borders, because of their privacy laws.
This necessitates not hiring product or data people there.
Source: worked there for five years many moons ago.