Does anyone remember last time trump was president?

Asking because I've seen a few takes here and elsewhere that suggest not. Usually 2 main categories:

1) "Trump says he's going to [blatantly stupid foreign policy]! Let's assume it's imminent!"

2) "Trump has someone working for him who says ___! That means he totally agrees

Now, my memory might be patchy, but I'm sure I recall things like nuking North Korea, which he was definitely going to do. Or people like John Bolton, who definitely made him invade iran