To some extent, I agree that optics make proper shouldering, and cheek weld less critical. People who run tactical carbine classes will attest to this, given the emphasis on shooting in borderline unnatural positions. Optics are literal life savers in these scenarios
At the same time, I see no need to confound the inherent, potentially life threatening problems that comes with self defense and force on force encounters by having a gun that is in a less than optimum configuration
I've run non-AR15 guns with very tall, chin weld optics in the past, and have long since determined through trial and error and after tens of thousands of rounds that I prefer the consistency that comes with a proper cheek weld