Is it ok to open Mi Yodeya in the bathroom and skim through the questions trying to find ones that aren't really included in limud ha'torah in order to read them? Or is the opening of the app and the skimming the questions in the bathroom already included in degradation of words of Torah?
The real issue I would worry about when scrolling through a list of MY questions is the interdiction of thinking thoughts of Torah in a bathroom. Even if our current-day bathrooms are not the bet hakissei of halacha (there is some discussion on this, see e.g., beginning of this), the Mishne Torah (Laws of Shema 3:4) and Shulchan Aruch (OH 85:2) forbid thoughts of Torah in a place where there is urine or feces.
Says the Rambam
Even to meditate silently on the words of the Torah in a latrine, in a bath house, or in any unclean place that contains ordure or urine, is also prohibited.
Bringing a phone with "electronic words of Torah" is not an issue since "electronic words" do not have the status of a Torah text, see e.g., here.
Bottom line as long as one is using the bathroom, it is NOT a good idea to review MY questions unless one is completely sure this will not evoke thoughts of Torah.