You cited an article that basically says 'Trickle down doesn't exist, plebs. But hey, trickle down totally works! Here's why!'. What he describes is the policies that people refer to when they say Trickle Down.
TD has been referred plenty, not under than name. You'll find a bunch of economist views (positive and negative) under supply side theories which is often steeped in trickle down theory.
And then the article promotes TD under the logic; "the sequence of payments is directly the opposite of what is assumed by those who talk about a ‘trickle down’ theory. The workers must be paid first and then the profits flow upward later – if at all." based on a couple of examples and his loose theory without any real research.
There are plenty of proper studies to the contrary available with an easy google.
A: We need to impose 100% tax on the top 10%, to achieve economic growth and lower inequality.
B: This isn't even wrong, this is asinine.
A: Oh, trickle-down much?
Why do this? Naturally, because genuinely debubunking the specific arguments against high tax rates is a lot harder than joking about the bourgeoise that promote TD because of their greed.