Why are people dumping their top sheets?

I keep seeing (and hearing, in real life) that people are declaring top sheets to be obsolete. Some say they generate too much laundry, or they’re tangle-y. Really, though, unless you are an outstanding sleeper, any time, anywhere, what’s the appeal of getting rid of it? Wouldn’t washing blankets and/or duvet covers be more problematic? And geez, re-inserting the duvet into the cover is like putting a sweater on an angry baby rhinoceros.

So what’s the appeal? What am I missing? I can never seem to chase the conversation to a satisfying conclusion!

Thanks