Syag> Mares ayin and chilul Hashem have specific halachik criteria. You seem to use those terms loosrly to mean, “something that makes religious people look bad” that isn’t how it works.
Every time I learned this sugya, the Rabbonim indeed bring expansive definition of this, regardless of the Rav’s hashkafa. A pretty Haredi Rav said that he stopped a maskless person dressed as a Jew in the street when there was a state gezera on outside masks and explained to him that this is Hillul Hashem. The next day after gezera was off, he was walking without the mask and joyfully questioned why I do. so, his major concern was Hillul Hashem not anything else. (I answered because I found my humra, I later updated the answer – because it helps me keep my mouth shut, although it is not really true)