Galchenyuk was not rushed. Until he blew (?) his rehab almost 5 years after he was drafted, he was progressing to the point where at 22, he was a regular center putting up 1.0 ppg.
I forgot about deLaRose, but again he was not even a first round pick, never mind a 1OA. They wanted to find an Eller replacement, since Lars was headed toward more expensive years, and they did not see Eller as a 2C.
Rather than say for sure that he was "rushed", I'm thinking more that had they simply used DLR in a Jake Evans role (4C) to start and let him advance to 3C with time, they yo-yo'd him, alternately expecting top offence in the AHL and top defence in the NHL.
Certainly deLaRose was not a success for the management and coaches at that time.