Less total minutes, still far and away the most deployed player with man advantage this season and last. And it's not like he's terrible, but others do produce more.
Of course Suter is reliable and efficient ... But it's something that gets harped on for sure, by media and fans alike. I don't think it's any huge leap of logic to think it might be a concern among players too. Just my take.
That probably is largely due to the fact he is probably the best passer on the Blue Line and maintains possession in the offensive zone better than pretty much all the blue line as well.