I understand your point because there are different Islamic “sects” with different interpretations but at the same time I take the view that people are free to have opinions in any topics.
An analogy like saying that a Chinese university academic can’t be an expert or opinion on Australia foreign policy and politics or vice versa etc…
Here we also have Islamic studies courses,Indigenous affairs course etc that are open to everyone.
There’s a saying:a person doesn’t have to be a chef to know (“judge”) good or bad food.
Besides, there are Muslim women who also say they believe those people’s interpretation is extreme.
I am not a expert on the Quran by any stretch,or an expert on the Bible by any stretch either but I have a general idea based off what I have heard/read through moderate Muslim friends.
Also I have Muslim neighbours,interact with Muslims all the time,
45 % of my ethnic background is Muslim,muslim family friends etc…
It is not “foreign” to me.
My opinions/perceptions are based on human behavior.Sometimes human behavior has religious cause,sometimes it has other causes but the person believes it’s purely religious cause.
If some Muslims want to have opinions/concerns about for example some Christians living in bunkers because they believe a “rapture” is imminent or some extremist Christians not allowing dancing I don’t really have an issue with that at all.
Personally I believe that the Christians with these beliefs it’s just as “unhealthy” but those Christians are generally foreign to Europe and Australia and it seems more prevalent in USA so I can only really raise topics that are relevant locally.