Ohhh yeah I know exactly what you're talking about. I'm one of those people who thought that was hypertrophy as well lol.
So as long as I'm not going on a restrictive diet/keeping protein high enough and just doing any chest exercise like flyes or even push ups here and there, my chest should stay looking exactly the same, while I continue to increase upper body/bench press strength with push presses.
And even if I decide to ignore the loss of muscle tonus, I can just basically just get it back and get my chest looking back to how it is now whenever I want by just doing direct chest exercises again for a couple sessions. right?