I guess the rational is that because Lin overlaps with Harden too much in terms of skill sets, so when the two of them together isn't working and your going to choose between one of them, then you'd usually go with Harden and start adjusting from there. but yeah, Harden was getting killed yesterday as much (and probably more so) than Lin. and perhaps more importantly the team completely fell into the Pacer's pace (pun!)
There's been a lot of cry on wanting McHale to at least try to stack the Lin / Harden minutes somewhat, right now Lin is almost never on the floor when Harden's not, which seems like a baffling way of doing things. because then your either running Harden into the ground or leaving a 2nd unit out there with no play maker at all.
I can see some of the general logic, but the execution isn't exactly great. you'd figure a Lin / Smith PnR combo especially against opposing 2nd team should be down right electric. why not try to play that out more?
To Lin's credit, he's done a lot to try to adjust to playing off the ball with Harden, his 3p% per month is shockingly good in terms of progress. as he's clearly trying to become a much better catch and shoot guy. But it's still a struggle, but then again, as other pointed out, Durant / Westbrook and even Lebron / Wade still took more than 1 season to figure it out.
.
I think McHale on a marco level has done epic things with this team, but yeah, on a detail level there are still plenty left to be desired. But it's just a microcosmo of the things he needs to think through, D-Mo has been horrifically bad last few games, Parsons cooled off and generally speaking we have no one that can remotely take his spot in most cases which means his minutes is also insane, Harden's defense is sometimes decent but often breaks down badly, Omer Asik's finish (or lack their of) is probably giving him a heart attack at times.
To everyone's credit though, at least no one's calling out other guys on the team . but yeah, I'd hope to see the team try and stack the minutes a bit better between Harden / Lin / Parsons. though in Parson's case that might need them to find someone who's faster than Delfino. which the current roster lack, the closest we had was probably Marcus Morris.