I used my 16 Pro Max for two weeks without a screen protector. I didn’t notice any touch issues (it didn’t get scratched either, not even a tiny scratch). Today, I installed a Spigen screen protector—it fits perfectly, but unfortunately, there’s a noticeable difference in touch sensitivity in some instances, mainly when typing on the keyboard. I didn’t have this issue with my 13 Pro Max using the same protector. The tempered glass protector definitely reduces sensitivity more than on previous iPhone models. Without screen protector, I have no problems.