Tp.
100% agree with the OP. Danny's decision to build a bench through his "drafting ability" has really come back to bite this team. Legit contenders have legit NBA veterans coming off their bench (example: San Antonio Spurs), but the Celtics inability to trade and consolidate draft picks over the years has forced them to compose a bench of crappy late first round and second round picks that no one else wanted.
Danny also gets what I call "James Young Syndrome" where he falls in love with a young player with a low ceiling and refuses to cut bait and use their roster spot for someone who could help the team in the present. Abdel Nader, Geurshon Yabusele, Kadeem Allen? What the heck are these guys doing on a team that's literally contending for the finals? That's three spots that could have guys who have actual NBA experience and could spell starters.
The Spurs have Kyle Anderson, Manu Ginobli, Derrick White, Dejoute Murray, and David Bertans playing significant minutes for them as late draft picks. They have all been developed in their system (Tony Parker is a starter, but him too).
On top of that Patty Mills, Danny Green, Brandon Paul, Jonathan Simmons (plays for Magic now), and Bryn Forbes are all guys who looked like they were on their way out of the league, but the Spurs developed them into role players in-house. They didn't just sign veterans -- they developed them.
Terry Rozier and Marcus Smart both look like guys who can contribute to a championship contending team. Smart and Rozier have already won playoff games for the Celtics. We will see on Yabu and Semi (as well as the late 1st 2018 pick), but both those guys have the elite raw abilities to make them good rotation players.
Maybe Ainge and CBS wanted to create a youthful, energetic, hungry environment to develop this team. Maybe they didn't want content players who knew their game.
Its fair to recognize the growing pains of the Celtic bench and be concerned. But I don't think its fair to assume these young guys are finished products.