I love the comfort seats as well as the full leather interior. I only with it came with the alcantara headliner too. But yes, the active ventilated seats barely do anything. I usually turn them on and it helps a tiny bit. But if your car was sitting out in the sun, then it doesn't really cool the seats down at all.
The ventilated seats on our S-class are just as disappointing. The ones that GM's come with actually COOL the seats and they get cold.

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2022 X5M Comp Dravit Grey/Full Silverstone
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2018 M5 Black/Full Silverstone
2015 X5M Donington Grey/Full Silverstone
2010 X5M Space Grey/Full Silverstone
2003 4.6is Silver/Black