I agree that it's important for young players to get some playing time, at least when you're talking about talented prospects who you expect to one day play a big role.
I disagree that they necessarily need more than 15-20 minutes in a reserve role, especially when we're talking about 19-20 year-olds who were only in college for one year.
As long as we're not in a situation where we have a guy we selected in the top 5 playing in the D-League because there's no room for him in the rotation, I'm not too worried about it.
If the IT / Horford / Crowder / Bradley group were struggling to stay above .500, I would probably feel differently. That's mediocrity, and I have no interest in watching veterans scrape for 41 wins and a first round drubbing.
That's not the team we have, though. The Celts are on pace to win 50+ and will have a real shot at winning a playoff series. Brad Stevens, for all the praise we heap upon him, has yet to win a playoff series. Isaiah Thomas, two time All-Star, has yet to win a playoff series.
I'd like to see the team win a playoff series.
There are goals worth pursuing below the ultimate goal of winning a title. I'm happy to see the Celts pursue those goals so long as it doesn't get in the way of having chances to build a sustainable, talented group that might contend at some point in the future.
Thankfully, because of the Nets trade, the Celts can do exactly that.
There's no harm in watching Isaiah, Horford and Co. see what they can accomplish for a few years while we wait for Smart, Brown, Nets picks, etc to get fully seasoned and ready to take the helm.
There's no harm in not giving the keys to the franchise to the young guys until they are 24/25/26 years old. Indeed, take a look at the Wolves -- you're not necessarily going anywhere with a core comprised entirely of guys in their early 20s, no matter how talented they are.