I really have some problems with such posts … from both sides since anyone must know that the first victim of war is always the truth even more so since we know that both sides lie.
I however would rate any Russian claim still much lower than OSINT reports from various sources. For official Ukrainian sources I would prefer to abstain a comment.
When the Russians said the Ivan Khurs, the Vasily Blykov and the Admiral Makarov didn't sink, they didn't sink. Why would you lie when photographic, satellite and reconnaissance data is available. Was it a lie when Prigozhin formally announced the fall of Bakhmut? That was collaborated with satellite, photographic and video evidence, which can be and was verifiably background located to all over Western Bakhmut. You can't lie on satellite because NASA collects all the heat imagery, and the constellation of fires on the ground from artillery and battles actually form what the real front is.