Why did Ethereum suddenly announce that it would terminate POW mining by the end of the year? Will it come true?

On April 30, Ethereum developers said that they would terminate POW mining by the end of the year, and the ETH Foundation forwarded it, sparking widespread discussion. Wu said blockchain consulted many industry veterans, and generally believed that the procrastination of Ethereum developers would make it impossible to end POW and complete the transition to POS by the end of the year. Previously, the industry generally believed that the transition would be at the earliest in mid-2022 to the end of the year. Jiang Zhuoer told Wu said blockchain that there may be two possibilities for Ethereum developers to speak at this time. The first is to hope to complete the launch of ETH2.0 before the end of the bull market at the end of the year; the second is to lower the expectations of miners and remind them of risks. Finally, with routine delays, miners' resistance may be reduced. In addition, Wu said blockchain believes that recently, Bitmain and others have announced that they will release Ethereum ASIC mining machines. Ethereum developers may reduce the heat from the perspective of reminding investment risks to avoid some buyers from losing money at that time and causing turmoil in the Ethereum community.