A dividend is something that a corporation pays to stock holders as part of profits. Usually extraordinary profits.
Trump wants to pay out money as part of tariffs paid by the very same people who he now wants to give a check. At best it is a reimbursement check. Trumps tariffs are basically money from the American consumer and now he wants to give some of that money back because his policy is retarded and slowing down the economy. So the check would be a way to stimulate the economy with more consumer spending. Hence a stimulus check.
If i take 20 dollars from you and you then have no money to spend, thats bad for the economy.
If i give you back 10 dollars in the hope that you spend it, that is not a dividend from profits. Its a hopefull stimulation for monetary spending.
You are still down 10 bucks
There is no way you can call it a dividend unless you are a complete moron who believes Trump when he claims tariffs are profits paid by other countries and not a tax on American consumers