It doesn't remove choice in "some scenarios" any more than the randomized map will always remove choice in "some scenarios" because of how map dependent city planning is going to be.
If you have a city radius with two connected mountains to put a campus next to. On one side (+2) is a grassland, on the other (still +2) is a desert. Sure, no brainer - put it on the desert.
Now, a different city - to the east are two tiles of mountain for +2 for your campus. To the west is a semi-circle of 4 mountains for +4. No brainer, your campus goes in the semi-circle. This would be a no-brainer even if districts granted the base yields.
The map defining your city placement is going to be filled with as many no-brainers as it will likely contain hard choices.