I would think the opposite. IF, the SD recording and the cloud events are independent, a detection setting of 50 should, in theory, produce fewer cloud events as a base to look for comparable SD recordings. The number of SD recordings should remain the same, assuming the same number of motions. IOW, if you had two cameras side by side, one detection setting of 50 and one at 100, they both should have the same SD recordings. The sensitivity setting of the 50 level device should, again in theory, have fewer cloud events than the 100 setting. Also, people may be setting their sensitivity down in an attempt to miss some insect 2" from the lens and miss the dude breaking into their car 20 yards away. Being able to watch months of event only recording is pretty worthless if you miss the one event from three days ago. I just know that here the camera on event only would not have caught their approach because it was in the previous minute and if it hadn’t been for my motion light, might not have caught it at all.
We have Nest cameras and Ring cameras in our neighborhood watch and anytime we’ve needed to view something captured, it hasn’t been there. I don’t know if it’s the angle or event only type setting, but whatever it is, they’ve yet to prove their worth.