New words are constantly being invented in science and technology, and after a while people start to use them.
Along similar lines, would it not be much less hassle to use an invented word instead of 'he or she' or 'he/she'? (If we use 'they', we are using a plural pronoun.)
Meanwhile, my question also concerns the question of whether such an institute exists, not just whether a good substitute for the expression 'he or she' is possible.