Meh, I’m no patriot, but I think American English is largely fine. Minced meat sounds gross, and for some reason when you drop the ‘d’ it means fruit. So yes;

Hamburger in lasagna

Hamburger in meatloaf

Hamburger in Shepherd’s Pie (no one’s ever heard of cottage pie)

Not hamburger in tacos, once cooked and seasoned we call that taco meat (you may have a point).