It’s disappointing that this is what the reviews turn into. I fear the same for services like Uber, but at least there I think it’s well know that passengers get reviewed by drivers and those reviews generate rankings which can affect drivers being willing to serve passengers.
As someone who periodically wants to use these kinds of services, it’s concerning that reviews may not be representative of reality, whether that means the reviews are lies, or reviews are missing. But if I’m being honest, I didn’t ever expect them to be truly genuine or representative of reality anyway.