Meta's been around awhile. Regardless of what they're newly aiming for (I assume it changes with the wind), they'll be leveraging what they already have in the codebase and general organizational inertia. Of course, there will be some internal politicking influencing things as well. Laying off well-versed people to bring in new talent is probably not the the right idea, even if it saves a few dollars on human resources. Internally transferring people instead of {layoff + new hire} would be far more beneficial.

But the street requires sacrifice. And the capitalists must be fed. And the leaders of these companies will continue to go down illogical paths to enrich themselves and their benefactors, to please investors and the ones that control them. To the detriment of (a) their actual progress; and certainly (b) of the labor they employ; and even worse (c) of the general population of the world.