You've misunderstood my theory as being about 7-segment displays specifically. For another language that uses N letters, you should be able to find a k-segment

You've misunderstood my theory as being about 7-segment displays specifically. For another language that uses N letters, you should be able to find a k-segment display such that k is not much greater than log_2(N). The theory is that writing systems evolve to encode their alphabet optimally in the information theoretic sense. 7 segments is the pattern that evolved for the ~50 symbol alphabet needed for English. Different sized alphabets and different arrangements of segments do not contradict this theory.