It's also so tiresome. I've seen people have started using other terms in place of retard in other places on the 'net.

On Twitch (the streaming site), for example, they use pepega (which is a depiction of a distorted and exaggerated version of the Pepe the Frog).

Or more recently, they've starting calling things and people "highly regarded" instead of "totally retarded".

The Euphemism Treadmill is real.