Makes sense to shift the date to March 4th, you just keep pushing the date to sometime in the future. They struck out when Trump lost because an easy 4 years was gone just like that. Then you had a ticking clock to inauguration which will happen so you need some other bullshit until you can come up with something else for the reason to keep believing into the future. It’s like the crazy doomsday people that put a date to it, the date comes and goes, and they just come up with a new date because they misinterpreted the signs.
Unfortunately, many Americans have always been gullible prey for doomsday prophecies, conspiracy theories, and the like. One of my favorite stories is the "Great Disappointment" of 1844. A preacher named William Miller used prophecies in the Biblical Books of Daniel and Revelation and came up with a complex series of calculations in which he concluded, and preached, that the Second Coming would be on October 22, 1844. His followers, called Millerites, and who may have numbered as many as 500,000, sold or gave away their worldly possessions and gathered on October 22nd for farewell picnics, dinners, and hilltop vigils waiting for Jesus to appear and take them away. When it didn't happen many of his followers were crushed, as well as humiliated. Miller said he had made a "miscalculation" in his prediction but never stopped believing in the Second Coming. Many of his followers divided into factions afterwards and argued over whether the Second Coming could be predicted (and what date), the meaning of the Second Coming, and so on. The Seventh-Day Adventists partly came out of the Millerite movement. What's interesting is the response from believers and non-believers, which sounds very similar to what's happening now.
Among the believers, many excuses were offered. According to Wikipedia, "Both Millerite leaders and followers were left generally bewildered and disillusioned. Responses varied: some continued to look daily for Christ's return, while others predicted different dates—among them April, July, and October 1845. Some theorized that the world had entered the seventh millennium—the "Great Sabbath", and that therefore, the saved should not work. Others acted as children, basing their belief on Jesus' words in Mark 10:15: "Truly, I say to you, whoever does not receive the kingdom of God like a child shall not enter it." Millerite O. J. D. Pickands used Revelation 14:14–16 to teach that Christ was now sitting on a white cloud and must be prayed down." A minister wrote that "Our fondest hopes and expectations were blasted, and such a spirit of weeping came over us as I never experienced before... We wept, and wept, till the day dawn." Another wrote that "I waited all Tuesday [October 22] and dear Jesus did not come;– I waited all the forenoon of Wednesday, and was well in body as I ever was, but after 12 o'clock I began to feel faint, and before dark I needed someone to help me up to my chamber, as my natural strength was leaving me very fast, and I lay prostrate for 2 days without any pain– sick with disappointment."
Among non-believers, ridiculing Millerites after the Great Disappointment was common: "Some are tauntingly enquiring, 'Have you not gone up?' Even little children in the streets are shouting continually to passersby, 'Have you a ticket to go up?' The public prints, of the most fashionable and popular kind ... are caricaturing in the most shameful manner of the 'white robes of the saints,' Revelation 6:11, the 'going up,' and the great day of 'burning.' Even the pulpits are desecrated by the repetition of scandalous and false reports concerning the 'ascension robes', and priests are using their powers and pens to fill the catalogue of scoffing in the most scandalous periodicals of the day."
A substantial number of Americans have always been prey to this kind of stuff. Maybe a psychologist or sociologist can offer a detailed explanation of why - it's like collective nuttiness runs in our genes.