Jason predicted that in November 2024 the Democrats would be “demolished” in a landslide loss to Donald Trump, conditional on not significantly changing course or replacing Biden.

What actually happened:

• Joe Biden withdrew from the race on July 21, 2024 and endorsed Kamala Harris, who became the Democratic nominee in early August, so the party did replace Biden and alter course. (en.wikipedia.org)
• In the November 5, 2024 election, Trump defeated Harris 312–226 in the Electoral College and by roughly 1.5 percentage points in the national popular vote (about 77.3M vs. 75.0M votes). (en.wikipedia.org)

On the key “landslide” aspect, multiple post‑election analyses explicitly characterize Trump’s win as not a landslide: the Council on Foreign Relations notes that, by either Electoral College or popular-vote standards, the 2024 result was far from historic blowouts like 1936, 1964, 1972, or 1984. (cfr.org) Trump’s popular‑vote margin is described as modest and one of the narrower wins in modern history. (aljazeera.com)

So while Jason was directionally right that the Democrats would lose the presidency, his specific prediction of a landslide “demolition” did not come true, and the conditional (“if they don’t replace Biden”) was also violated. Overall, the prediction is best judged wrong.