Fortunately, that doesn't work either, there are several issues with that logic.
We are still (nominally) a type of Democracy. That means our 'leaders' must be elected. The 22nd only addresses term limits, the constitution itself spells out how the President comes into power in the first place, and that is by being elected. Nowhere is the President granted the power to appoint someone else to the office. The 25th amendment lays out who is to be president in the event that the current one is unwilling/unable to perform their duties.
Still, we are talking about if he at least wants to have the appearance of legitimacy. He's certainly argued that he can 'creatively interpret' the constitution to suit his agenda. For example, despite the 14th amendment stating that "...all persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States." the Trump administration has tried to claim that 'all people' do not include people who's parents were 'illegal immigrants', despite the Supreme Court precedent that it most certainly does include them.
I do have some faith that Americans would not stand for that though. That would be the final straw for many of us. If I am still around and something like that happens, I know it will be the final straw for me. I was born in a 'free' country, and I have no issues dying to help ensure it remains that way.
That being said there is nothing really stopping him from being the 'de facto' president in the case one of his lackeys gets elected and is willing to let him do so. For example if Vance were elected he could allow Trump to attend meetings and press conferences and speak on his behalf. He could be appointed an 'advisor' and Vance could follow his 'advice' every time. Hell he could allow Trump to sleep in his bed and use his toothbrush if he wanted.
Hopefully the DNC will pull it's fucking corporate boot licking head out of its ass and put up a candidate that's actually worth a damn for the next election, but that's about as likely as Trump stepping down gracefully.
It's going to get a lot worse before it gets better. I wish I believed in God, I would ask you to pray for us.
Well I'm not sure what your point is then. Just keep voting the lesser evil until one day you find yourself in the voting booth gleefully voting for Hitler 3.0 because at least they are marginally better than Hitler 4.0?
Just hang your head and cry about it and do the bare minimum you can do to mitigate the damage?
I'd rather at least try to fight for something better. Even if it doesn't work out it's better than just capitulating and being all but complicit in the system that is actively making our lives worse.