KY
here to help!
1) People dont expect better from them. Many here (not me don’t worry) expect Charediim who claim to follow the Torah to behave as such, when they don’t, they are shocked and call it out. (You won’t find such comments from me, since I am not shocked and do not expect chareidim to behave normally)
2) (Similar to 1) Chareidim look like Frum Jews, thus when they don’t behave it creates a חילול ה. Most of these protesting Ethiopians do not dress like Orthodox Jews, thus the חילול ה aspect is mitigated.
3) nobody is defending the Ethiopians, that which is obvious doesn’t need to be said. but surprising as it may be there are some here who support the evil Chareidi looking protesters , thus causing others to be moche leshem shomayim
hope these reasons help. They are just guesses I am not one of the “worriers” you mention
I also hope you finally go t some clarity on the difference between doing things with and without permission.