How to easily tell people are sexist and bigoted, look at the posts by @JJKK and @Abyssal_Bleakness
It's a joke, you don't get 2013 "black humor". Back in the day it was normal to make fun of people by appearance and overall nationality. /s
That's how now famous Twitch streamers calling themselves "Nazis" gained audience, at the cost of other people suffering. Then when the reverse UNO card gets played 10 years later (today), they expect others not to behave like them when they only had 22 years old. Shielding behind their 13 years old Minecraft/Fortnite army in the process.