Not per se, but that would allow for any inefficiencies to be moved around, which is not contrary to what I'm arguing. It's quite a bold claim to say that people will think faster or more efficiently in general, but not as bold to say they will think faster or more efficiently about some things. You might be able to make a language more efficient for technical communication while making it less efficient for poetic communication, but I don't believe you can make a language more efficient at everything people need to communicate.