So, I should ignore my goals, and how to achieve my goals? I should get a thick midsection doing weighted core exercises, and get a thicker midsection so I can OHP?
There's more than 1 way to achieve results. I've had experience with OHP, and it didn't seem effective in building mass as much as other exercises, so I don't bother with it.
Im not saying you should ignore your goals at all. Im saying there may be a different or a better way of going about achieving that goal. There may be, there may not be.
The thickness of the midsection doesnt matter to OHP. OHP requires core stability, not core mobility like most ab exercises people do. Theyre very different. That core stability needed for OHP will translate into better squat and deadlift gains.
If you dont feel like its effective in building mass, then thats a better reason than its core requirements and momentum.