Key 3: Incumbent seeking re-election
Lichtman says an incumbent president seeking re-election has several advantages, such as the ability to set the national agenda, and often attracts far more media attention than a non-incumbent. The president can also benefit from the rally 'round the flag effect in times of crisis.
Lichtman also says that presidents running for re-election rarely face the strongest candidates from the challenging party, who typically refrain from running unless the president is seen as very vulnerable.
This is certainly not the case this year so I am puzzled why he is going against his own guidance and observation.
It's not puzzlement. You already know why, he's lying. Just accept it as fact that it's purposeful and then you'll know how to react accordingly.
“ability to set a national agenda”
All Kamala can do is propose agendas unless she is operating with unconstitutional powers behind the scenes.
Is Lichtman saying Kamala is now President?
Is Lichtman saying Biden has had no say in national policy?
Since Biden is still President, any national agenda stays with him, because (in theory) that is where the power lies.