In my opinion the Internet is not destroying the English language  because everything in the world is not perfect a language is always going to have slang in it is just life to me honest everyone is going to know about slang unless they make a rule not to use slang bcut I  doubt it.

The way you talk can always be changed in special meetings or businesses also job interviews and also when they want to sound smart to some one or they are showing other people they can be seen like they are presentable and smart to be around important people with more power that him, but at home he talks slang with his friend and on his phone

people usually use the laughing emoji