Are questions that relate to how physics is being presented in teaching on topic in this site?
While in general the subject of a question doesn't determine if it is on or off topic, I will say that, unfortunately, I think questions that relate to how physics is being presented in teaching is off topic for this site$^*$. The biggest reason is because most questions like this will probably be opinion-based, which is a reason for question closure here. Perhaps a question about physics education research with actual quantitative data would not be considered opinion-based, but I feel like at that point you are moving away from asking about physics and more about just teaching. And even then, there can be varying opinions about how the data should be interpreted, how one should act upon that interpretation, etc. Therefore, while physics education is certainly important for physics, and I am sure many people here would have some great things to say, I don't think it fits what Physics SE is specifically about.
This is not to say that I don't think such questions are important. I love thinking and talking about physics education. Based on the related links given by @QMechanic in the comments of your post, it looks like there have been attempts to create SE sites devoted to physics education. If you feel strongly about having a place for physics education questions, perhaps you could study what went wrong in the failed attempts to make a better site. I would definitely love to be a part of that site.
$^*$ This is not to say that there cannot be any physics teaching questions on this site. I am speaking more generally about how I think such questions will most likely be interpreted by the community.