Your question is not stupid. There is a notation option for disallowing dotted rests, but it operates on different rhythmic strata than what your examples desires. Dotted rests within the beat are usually desired, though I understand you do not desire them. The notation option in Rests you were referred to really only deals with dotted rests larger than the beat. In both of your examples, the dotted 8th rest and dotted quarter rest are smaller than the beat, and thus the dot is allowed.
Currently, there is not a Notation option for what you are looking for in simple meters. The most elegant solution would be using Force Duration when needed. You could remove all dots entirely, but this has other issues, as suggested.