I think Sixers are wrong to start Fultz over Redick.
It was a very strong starting unit, and it add pressure on Fultz.
While if I was coach, I'd too probably be starting Redick, I don't think it's wrong to start Fultz. The season is much bigger than the first game of the regular season. Fultz playing towards his full potential and being able to gel with the starters will do a lot more for Philly down the road (playoffs this season, future seasons) then trying to win what is basically a meaningless regular season game.
There's always going to be pressure in the NBA, this may be the best way to help Fultz learn to deal with it.
But if he does not perform well and needs to be benched his confidence will be ruined once again.
This is the NBA, if he can't cut it then he can't cut it.
Also again, just like the C's, Philly's not playing for the regular season. What's going to have the team playing its best by the playoffs? Relying on a 34 year old SG or developing the next James Harden? I can definitely see the payoff of playing Fultz a ton of minutes so he develops and his ready by the playoffs (this year, and future seasons). You know, what some people here want Brad/Danny to do with every rookie (start Mickey, start Semi, etc.).
But if we want to get all psychological, I think there's also potential that bringing him off the bench could also ruin his confidence/ego (I'm not good enough to start, the team doesn't trust me, how many #1 picks are coming off the bench
in their 2nd year, I'm a laughing stock, etc.), which in turn could cause his yips to return.
Really though, I think both things have potential to help/hurt Fultz. On the one side, if you show him you believe in him and are starting him then that could help his confidence, on the other side you can argue bringing him along slowly and having him play well against the 2nd unit would help his confidence.