It’s emotionally coded:
“Finally”: assumes everybody has been holding their breath waiting for his next move; he is in power
“As promised”: conveying him as a man who keeps his word; an attempt to convince people he has integrity
and the “trick” to get people to click a heart/like to test it out, which is a common thing people do anyway.
and of course the “Elon Musk Cool Guy You Like, See?” pose.