> the English Empire may have collapsed but that's mostly because Britain just got bored of it. There's no traditional collapse for the breakup of the British Empire

I completely agree with the point you're making, but this part is simply incorrect. The British Empire essentially bankrupted itself during WW2, and much of its empire was made up of money losing territories. This led them to start 'liberating' these territories en masse which essentially signaled the end of the British Empire.