It's been the trend to assume everyone figured out his offense in the NFL, especially since Lurie gave him the can of gas and lighter in his last year. But I am not so sure that's a safe assumption. Why? Because when you look at what Chip's philosophies are, they are sound:
1. Spread out the defense and quickly hit isolated matchups.
2. Run into a box whose content you dictate.
3. Simplify reads based on your gameplanning to make the QB's life easier.
The basics of offensive football are dictating, i.e. using the rules of the defense against them. Yeah, we all know the players have to be of a certain quality. But within that roster quality there is room for deviation of result that can be better or worse than it should be based on how well you dictate.
I also don't think the simplified reads are a problem if your gameplanning is good enough. I think his struggles at the end of his Eagles tenure demonstrate that you still need talent, and if anything offensive coaches simplifying reads might be more the norm in the future of the NFL given the way collegiate QBs are developed (barring the NFL stepping in and putting a stop to drafting underclassmen IMO, which is a whole other conversation).
This is why his stint in SF is going to be a very close story to watch unfold. All the signs are he's gonna fail hard, but if he can succeed in this division, and this time debunk the thought process that teams have "figured him out," there will be some owners looking into the college ranks again for a guy who can provide that quick translation of QB draft capital into wins.