US does these things, its just not highlighted front page material in American press when it happens, so it goes unnoticed to American populations unlike when adversaries like Russia fly bombers near Alaska.
Also US conducted similar maneuvers as what China did to Taiwan but to Iraq preceeding the Iraq invasion.
Tit for tat or a part of a consistent NATO combat exercises? If this is the new norm for a Chinese excercise, they clearly are overcompensating: a fleet of them versus a trio of bombers.