Greta Thunberg changed his name on Twitter to "Sharon" for a few minutes: why did he do it?

A curious failure in a UK television contest caused the Swedish activist to temporarily change her name on the famous social network
Greta Thunberg has revolutionized social networks. A curious failure in a UK television contest caused the Swedish activist temporarily change his name on Twitter for "Sharon", thus becoming one of the most famous "memes" of the year.
In the BBC program ‘Celebrity Mastermind’, where celebrities face a series of questions of general culture and current affairs, actress Amanda Henderson had to answer the following question: “The 2019 book titled ‘No one is too small to make a difference’ It is a collection of speeches made by a Swedish activist against climate change. What's your name?"asked host John Humphrys.
"Sharon," Amanda Henderson replied with bewilderment and shaking her head. His response soon went viral on social networks, where users joked about it. "2020 is canceled," comedian Mark Smith tweeted.
Taking advantage that the ruling went viral on social networks, Greta decided to participate in the joke and temporarily changed his username by "Sharon".
This modification occurred on the same day that Greta turned 17, so many began to tweet "Happy Birthday Sharon" ("Happy Birthday Sharon), which even became a trend on Twitter.