You can certainly argue that this is true.
The Gulf of Tonkin Resolution can clearly be said to have given Johnson too much power. He used it to send hundreds of thousands of troops into a war that does not seem to our modern eyes to have been worth it.
Some years later, Congress passed the War Powers Act in an attempt to prevent future presidents from having as much power as Johnson had.
However, I am not sure that the Tonkin Gulf Resolution really gave the President too much power. It is not clear from the Constitution that he needed it at all. He is, after all, the Commander in Chief of the military and can send it wherever he wishes.
For this reason, the War Powers Act has never really been enforced and many people think it is unconstitutional.