I was reminded of Mikhail Kolyada - gorgeous, wonderful skater at his best.
Oh Misha! I agree, such a talented, beautiful skater

He is really missed, he left a huge gap in figure skating when he retired that doesn't seem any closer to be filled.
But, was he really underrated? Seems to me (mostly) everyone appreciated his talent and skating, and he was highly regarded by fans, commentators and judges.
He was very sadly underachieving, that yes, as his results medals-wise did not end-up matching his enormous talent, not even close

but that was mostly due to sad jump inconsistencies, injuries, and general lack of luck and misfortunes that appeared at the worst possible times in his career, and not really to lack of recognition.
Incidentally, I was also reminded of him just a couple of days ago in another thread about a skater coming back to competition after many years of retirement. I always felt Misha's career didn't end "right", between injuries and the Russian ban he didn't get to skate during his last season and didn't have a proper farewell as he deserved. So, though it's extremely unlikely, I do wish he would come back even for just one season, not just so we could all enjoy his skating once more, but also so he could have a fitting closing.