Federal elections are run by the states, and this isn't a matter of disqualifying him from the race entirely, only keeping him off the ballot in individual states by their own choice. In other words, even if SCOTUS ruled in favor of 14th Amendment disqualification, each state would still have to go through their own process of removing him, it wouldn't happen automatically. I don't believe SCOTUS has the authority to strip states of this power, and it's nigh impossible to pretend the amendment isn't applicable to Trump after so many Jan 6 convictions.
For starters, Trump never should've disbanded the federal pandemic response team which was established during the Obama administration. Whole lot of people died from that one act of pettiness alone. Next, Trump should have let health professionals take charge of the messaging and most TV appearances. Instead he always had to be front and center, trying to sell us ridiculous "alternative treatments" that he no doubt held stock in. Lastly, he politicized both masks and the vaccine, which ultimately ended up getting a lot more conservatives killed than liberals.
A whole lot of Democrats warned before the election that Trump was not competent enough to handle any sort of national emergency. He proved them correct.