Imagine a F1 car with a 1000 hp engine travelling at its top speed. Why does it have a top speed at all? The top speed is where an equilibrium is reached between the power of the engine and the power of the drag and rolling resistance - the force of acceleration is matched by an equally strong force of resistance in the opposition direction. For F1 cars the rolling resistance is going to be relatively small so if you have 1000 hp at the wheels then at top speed the drag is going to be nearly 1000 hp as well.
I think where people struggle is that drag is very much non-linear. The closer you get to the top speed the bigger difference it makes. If you want a really simple way to think about it: in a modem F1 car the drag will not make much of a visible difference until the car is in 8th gear.
Putting it another way: take the exact same F1 car and run it in the same conditions with a slightly different amount of drag. Let's imagine a start-finish straight where you have a timing beam at the start line and another (say) 500m down the track at the speed trap. Let's say that with the lower drag config the car does 250 kph at the start line and 325 kph at the speed trap and with the higher drag config the car does 320 kph at the speed trap. What speed do you think it'll be doing at the start line? If you said 245 kph you'd be wrong. It'll be more like 249 kph (maybe even closer to 250 kph). In real world conditions the margins of error and the effects of things like wind would actually be a bigger difference.
Another common mistake people make is to assume that drag and power are equally important to lap time. This is wrong. For a F1 car, power is much more important - to use my simple model above, cars spend much more time in gears 1-7 than 8th gear. If you compare two cars - one with high power and high drag and one with lower power and lower drag but both with the same top speed, the high power car is going to faster down the straights as it will have a significant advantage in the early part of any straights and by the time both cars reach their top speed the high power car will already be ahead. For cars racing each other with DRS then top speed starts to become more of a weapon as a higher top speed makes it easier to defend and easier to overtake.
So with that background out of the way, what do I think Ferrari are doing?
I have no idea but if they're doing something special in the early part of acceleration zones then perhaps they're doing something like this: I believe its legal for each gear to have a different engine mapping (something that's often done in sports cars). So perhaps Ferrari are using more aggressive settings at lower gears than higher gears. After all, if you're accelerating in (say) 4th gear then you won't be in that gear for long so a quick burst of extra power will be useful and also over quickly so it won't put much strain on the engine. Since that would likely be just after a corner the engine would probably be a bit cooler as well. A gear specific "party mode", as it were.