I truly hate the vacuous space articles that are being pumped out it seems daily about new planets, etc.
All of these articles are speculation and conjecture. I have never seen so many “may”, “might”, “could”, “perhaps”, “if” and the rest of the article goes on assuming all the coulds and ifs have been proven true.
These articles are more science fiction than science. They are wishing so damn for this stuff to be true, and can;t help themselves writing it as if it is.
While not necessarily in this case, the evidence for exoplanets is quite (there's a qualification) strong, and in the Solar System, water is common, although it is usually in solid form.