Draymond taking 4 3PA at like 33% or lower didn't help them. Simmons is at least as good an offensive player, likely better. I don't get the attitude thing. Simmons' attitude to me on D is better, he commits less dumb fouls, less techs, and he goes out and clamps anyone and wants the hardest assignment. He's passive on offense, but so is Draymond.
I think he's arguably better passer, and he draws fouls at a higher rate each year (which even at 60% has value), he took as step forward in 2018-19 in terms of scoring efficiency and has maintained it.
I agree it's tough to have your 2nd max player not be a scorer, but at the same time, I think you can find scoring guards if you have an elite defender and passer as a big.
Simmons is a really good NBA player, who can't play with Embiid well. He needs to be the man in he mid-post surrounded by shooters, just like Embiid does.
He needs to work on his FTs, and preferably add a mid-range pull-up, but even as is, he's a really valuable player. I'd much rather have him than CJ McCollum, who you can get 90% of from guys like Clarkson and Norm Powell. There are always small SGs who can't defend buy can score kicking around.