I agree. Complex optical corrections are also complex post-processing corrections. Some of them are better solved in the optical domain, such as OOF rendering or glare. An analogy would be the effect of a polarizer filter, only achievable when dealing with the actual light itself.
Postprocessing also tends to increase noise and potentially lose a bit of resolution, depending on the specific processing required.
An ideal joint design (optics + dsp) would be able to do "global" optimizations that may not be possible of each component is to be optimized in isolation.
I imagine that designing a lense is all about compromises. How large can we go? How expensive? How much CA? How much vignetting? etc. If any one of those requirements can be relaxed by correcting digitally instead, it might mean that other requirements can be more stringent. E.g. more lense resolution traded for more barrel distortion corrected in dsp. The end-result should then be better "total quality" (or lower cost, lower weight, etc).