Ironically I am a huge fanboy of all those players when it comes to the eye test. But that may be because I am more left-winged
My personal hypothesis is that conservative people don't like defenseman like gardiner. I have done a lot of research for a psyc course I did before and it is proven that conservative people are more easily startled and are more prone to produce a hostile respons e to that anxiety. Those who are left winged aren't as easily startled or as hostile in anxiety producing situations.
Which makes sense why they wouldn't like a guy like gardiner despite the stats. He plays a very anxiety inducing game. He holds on to the puck a lot even in dangerous situations, makes risky passes and just seems to hate the safe play. For me, what he does works and he makes way more good plays then bad so I really like him. For others, he plays on the edge - it makes them worried and they don't like that. They much prefer the "chip it off the boards + knock down all the forwards on their butts where they can't do anything" style of play. I remember watching a game live last year when gardiner was fending off 2 attackers and was holding on the puck for a bit too long. In the end, nothing bad happened and he ended up making a great play and getting the puck out, but there were still a lot of people muttering their discontent - probably because that sequence scared them..
And even on this board. It seems that the gardiner dispatchers preach a more conservative approach whereas those who support him (like nithoniel and 91kadri91) are imo more left-winged.
Just something I noticed which could explain why a guy like gardiner is so polarizing amongst fans.