It's also faster than boiling a pot of water on the stove so you can save time if you run it through the kettle and then poor it into a pot on the stove to boil whatever you were making.
Ironic considering I already knew you were talking about superheating, which requires an incredibly smooth container and multiple microwaving attempts to pull off
You can prevent such dangers by: not double-microwaving your water (even then it's a low chance), using a rougher cup, or sticking anything (like a spoon) in there while you heat it
But sure, keep acting like a rare occurrence under incredibly specific circumstances is something to be deathly afraid of. Whatever floats your boat. Just stop spreading it around.
Someone said something blatantly false on the Internet and tried to be smarmy back when they're wrong. Might I also add: nice projection.
If it makes you feel better to think I'm in some way insecure about a simple fact (that the video from OP goes over as well, btw) then I guess feel free but it only makes you look like a bigger idiot to me.
We have one because of the tea drinkers in the house. But I use it a lot more than I would have imagined. Oatmeal, making stock from soup base, etc. I have an induction stove, but the kettle is easier to pour than a pot.
They're great for everything from tea to coffee, instant ramen, boiling water faster on the stove. Not having a kettle and having to boil/microwave water would be a pain imo.
I drink tea a couple times a week. These are way way better than microwaving a cup of water and nearly as quick. The biggest thing for me is getting the water temp right where I want it for whatever I'm drinking. Also, they don't take up much space, and you can put them in a cabinet when you aren't using them.