- English promoting logical reasoning is pseudo science. It should be at least as good as any other Indo-European language by the virtue of being highly related to them.

- Logical reasoning isn't necessarily a value in and of itself. A civilization can be primitive with with overall higher level of happiness in the population than than something with large and complex technology/culture, institutions required to maintain all that, and pervasive market driven competition, that is alienating and atomizing.

- Cultures evolve and change. Today anglo-culture is highly techno-capitalist, and is indeed dependent on logical reasoning, but without competition nothing prevents it from devolving into various forms of religious hysteria, new cults appearing and so forth. And with a single-language single-culture setup there won't be a place to escape to from all that. This is sub-optimal.