Right on.
Riquelme could only dream about having half the career of Marchisio!
It's fairly simple imo. People who think Juve's roots & traditions (the more sentimental bunch) are important, lo stile Juve as they say, will be against his sale. For those who think that is less or not important, he's free to leave.
Still, you'd think a player who was among the best, if not the best, in the season where we first clinched the scudetto again would get a lot more credit. Hell, he was pretty damn good this season as well & Pogba, or anyone else, will have an extremely difficult task to replace him in the current squad/formation.