If you don't like the thread, you could just click past it. No need to be rude about it!
Plus...It's a totally reasonable question. Questions about garment care, dry cleaning, etc. often come up.
But what about germs and vermin? What if your garment is stained with something that you just find so disgusting that you just can't imagine it ever being "clean" again no matter how much you wash it?
We all wonder about these things. It is normal! Chill out !