That's where you're wrong. She probably did type in chat "OMG thank you so much" and then turned off her computer. He probably screenshot the message and stares at it all day. Super worth it.
Well, you know how it goes. A fool and his money are easily parted. I can't phathom donating to rerun vods.. At least the delusion of your waifu streamer saying hi when live is a dopamine hit or whatever.