Ventilation shaft installed too deep in the splash water area

Hello,
I hope you can help me, as I have very limited knowledge in construction!
I moved into my new build last autumn and have been wondering from the start about the height of the ventilation shaft of the kitchen extractor hood, which was only slightly above ground level before the asphalt was laid. In autumn, the driveway was paved, and if the workers had not been careful, the ventilation shaft would have been buried halfway below ground level.
Since the load, among other things with moisture at the base, is highest, I am worried that especially during heavy rain, moisture could enter my house through the shaft. According to my installer, everything is fine. However, a colleague who is not an expert said that the shaft should have been installed at least 30 cm above ground level.
Is the shaft too low or should the installer have chosen a different height? What should I do in case of water damage?
Looking forward to your answers!

Hope one can now imagine something from this :)

Is the kitchen located under the shaft, or does the duct come down from above? In general, I would be more concerned about blockages caused by leaves, dirt, and non-paying subtenants...

The kitchen is located above the shaft, the shaft itself runs in the screed. At the cooktop, it then goes approximately 80 cm vertically upwards.

From my point of view, this is botched (at least the small animal protection should also be ensured at an exhaust air outlet). The same goes for the long end of the KG pipe (orange), which protrudes beyond ground level. Unfortunately, I cannot confirm this to you with letter and seal and paragraphs ... ;-). And who really knows the building codes and regulations abroad.

Who planned and built the house? Did you have an expert at your side (an appraiser)?

As a layperson, I would see the danger in rain or water accumulation. The water will run in, won't it? [emoji33] But I am just a layperson...