people have been typing seemingly random letters and numbers in chat for a while now and i haven’t seen this anywhere but ow. is this a legit language, and if it is then why does it have numbers in it, and if it’s not, then are they bots or what’s going on?

https://preview.redd.it/t4nhi2dieo2c1.jpg?width=485&format=pjpg&auto=webp&s=0cba594334998be39a230b57710094fd7a2f8684