Not all rings carry the same importance, you need context to assess a player's trophy haul. One ring for Durant at OKC would arguably have counted more than the ones at the Warriors in a lot of people's mind. Likewise for Mane, I'd argue another PL title with Liverpool would be regarded as more impressive than two titles at Bayern which some may consider a cop out move.
I have no qualms with him wanting to leave to try another challenge in a different environment. Has given us his best all the time, was superb for us and won pretty much everything there is to win in England. Has always been classy and respectful, I'll miss him but we don't need players who don't wanna be at the club themselves. I hope we respect his wish and deal him in a classy way, not trying to squeeze every last ounce out of a potential deal. Bayern did the same for Thiago two years ago.
There's context but there's also probability. At Liverpool, there's a reasonable chance that he never wins a another title and 2020 remains his only medal in a major European league. At Bayern, there's a very good chance that he wins additional league titles and adds to his collection.
In basketball circles, Charles Barkley is often derided for not winning a ring, when he was far superior than many players than won multiple rings. There are a lot of players who would prefer a Draymond Greene type career than a Charles Barkley one. Nowadays more and more of the star players want to play together at least for a few years, the minimise the chances of ending their careers ring-less. The notion that the more rings that players win, the greater their careers are, regardless of context , looks to be increasing all the time.
Also would many players care one bit about people on internet forums and the like analysing and slicing and dicing their career honours and numbers in detail, putting more value on some successes than others? Somehow I doubt it. I certainly wouldn't if I was a pro !
A lot of players might value 1 Premier League title and 1 Bundesliga title more than 2 Premier League titles (or 2 Bundesliga titles), as then they've won 2 different major European leagues.
Also this idea that has spread over time that joining big, successful clubs is a 'cop out' (it was definitely leveled at Guardiola for joining Bayern and then City) has always seemed very strange to me. I mean in any walk of life, how many people wouldn't want to join organisations that firstly pay them very well, and secondly also given them an excellent work environment and resources to succeed?
