Trump Derangement Syndrome is a direct ripoff of the phrase "Clinton Derangement Syndrome", and is fake AF.
Criticism of a president is valid, and the more stupid shit a president does, the more criticism a president gets.
Mark up a hurricane map with a sharpie because you want to use FEMA funds to award a friendly governor not affected by the hurricane. Criticism.
Direct a mob to attack Congress and kill the vice president because you lost an election. Massive criticism.
OTOH, fire a travel agency for not providing good service and get investigated for 8 years -- that's derangment. Accuse a woman of murdering a suicide victim even though she's surrounded by Secret Service and witnesses at all times. Derangement. (Both of those happened to Hillary).