Are you trying to suggest that what Trump says he'll do and what he does are bound by some code of honour or something? That he tells the truth in advance? That he's honest about his agenda? That he doesn't just make up shit on the spot like "inject bleach" that strikes him as a good idea at the time in his tiny brain? That's really not my experience last time round. Outside of a few ideas that he stuck with, whim and unpredictability are the hallmarks of a Trump administration. You never knew what was coming next. Why would we know now?
He's also the most famously prolific liar on the planet. He genuinely doesn't care whether it's true, it's just not a factor for him, he just cares what saying it can achieve for him.