I mean that these claims are based on objective measurements, however subtle and refined they might be.
There COULD be liquid water there. We don’t know. There have been times when Earth was frozen from pole to pole. Position relative to a sun is one of about 100 things (that we know of ) necessary for life.
Does the planet in question have a iron core so so there is a magnetic field? Does it have a moon to stabilize it’s spin?
We know nothing.
Don’t get me wrong. Speculation is fun. But it’s called science fiction, not science.