Not so, if your bike is set up right.
If you are comfortable using the drops while climbing and shifting bar end shifters with your hands still on the bars, then your bars are WAY too high. You must have a 45 degree angle in your back while using the drops. And a 90 degree back when using the hoods. Your bars are way too high and probably your reach is too short. In case you did not know, which I suspect you did not, when riding in the drops, with a slight bend in your elbow, your back should be flat, horizontal to the ground. When your hands are on the hoods your back should be about 45 degrees to the ground.
ROFLMAO! You're wrong, but keep the nonsense flowing, it's really entertaining.
No. You have a very poorly fitted bike if you are comfortable climbing using the drops. Unfortunately, poorly fitted bikes are very common. Drops are used for getting aero. Minimizing wind resistance. You have to get your back flat to do that. You cannot climb with your back flat and your eyes staring down at the road under the front wheel. Breathing isn't as easy with your back flat. Yet you claim to climb with your hands in the drops. So when in the drops, you do not have a flat back. You ride in the drops with your back at a 45 or 60 degree angle. That is a poorly fitting bike. I'd recommend you get a properly fitted bike.