No, just a massive failure by the Democrats who decided too late to run Harris. Any candidate who won a party primary would have beaten Trump today. Harris lost because she wasn't popular enough with her own party's voters to win.
JD Vance hopefully can 25th Amendment the Trump before senile behavior wrecks the office. But I'm worried that Trump stays in all 4 years and does irreparable harm.
25th Amendment powers have never been used before. So it's not clear how far Trump will degrade while still holding onto power.
That's the preferable option to letting Vance near the presidency, sadly.