Definitely! There has been some discussion in the teacher's lounge (all-mod chat room) about this: there is zero information available to mods from other SE sites to say what is on-topic for SP.SE.
A suggested update:
What topics can I ask about here?
Signal processing conceptual questions.
Example: Why is the Fourier transform so important?
Provided you haven't asked the question on a different SE forum, feel free to ask it here. We have several OpenCV questions here.
Just try to ascertain whether it's really a programming question, rather than one related to image processing. Calibration questions (even using OpenCV) are on-topic; questions about which function to use... perhaps not so much.
Should we ask for a move?
Yes, I would second that request although, I would not get too caught up with labels. The whole "Data Science", "Network Science" and other terms, are sitting a bit oddly with my understanding. What else does anyone expect a scientist to do other than work with data? So, independently of whether "we" are scientists or DSP can be ...
Since I was the one who closed the referenced question, I'll answer for that specific question and then try to generalize.
For that specific question, I believe there are many possible answers, none of which are "technically" correct and all of which are a matter of opinion. For example:
Removable Discontinuity : I don't personally think this is correct, ...