My honest opinion on Rie is that she's harmless. She can be funny sometimes and it feels like she's found a groove with a fairly tight-knit fanbase, so you can do much, much worse.
She mostly gets shit here because it's superduper easy to make fun of her. She has terrible opsec to the point we've seen everything from a cringe holding-up-cards video of her as a teenager talking about her girlfriend to her more-recent Tinder photos, she's promiscuous, and she's the worst out of everyone in the company at handling stray capippis. None of this really affects her streams that much which is why I still like her, but I am also an arsehole who will take any opportunity I get to make a jab at someone on the internet.