“they” (1 word) is shorter than “he or she” (3 words)
“they” is more inclusive than “he/she”
“themself” flows more naturally than “him or herself”
“they” is less clunky than “(s)he”
it’s time to replace the awkward “she or he”
“hey can you go ask they what does they want for dinner, and when is they coming over to watch movies with they?”
“Hey, can you go ask them what they want for dinner, and when they’re coming over to watch movies?”
Step one is learning how to talk like a human person.