Yep, that’s right.
Maybe there will come more options later to enable / disable them, but for me they seem to have more constraints / requirements than front / back and even top / down sensors.
Also I realized, there’s also only one hole for the lateral sensors. All other sensors are doubled, aren’t they? So maybe they aren’t as poweful or don’t have enough resoluton or are simply slower than their counterparts on other sides of the drone.