When has that ever worked out for anybody? What are you even saying, life isn't some sort of Joseph Heller novel bucko. This is the big leagues, you need all those people to keep the trains running on time.
Are you seriously trying to tell me that some smooth operator can just come waltzing into a well oiled operation like Twitter Inc and simply purge thousands of highly skilled specialized knowledge workers assigned to an extremely complicated web scale project willy nilly?
What of all the accumulated institutional knowledge. Countless man (and woman) years of code optimizations. The massive ETL pipelines. The company culture. Truly the most valuable asset Twitter has is the talented people that work there. Surely it would all come crashing down.