To answer a previous poster:
The halacha does not change. So if there were times in Jewish history (as there most assuredly were) that NO one davened with a big brimmed hat, or a black suit jacket and white shirt, or maybe even wore no sox with their sandals,and it was “kosher” then to do so, and people were not ostracized for not wearing Yeshivish levush, then perhaps those who hold that this levush is the only proper attire, might consider accepting that other people who dress differently might still be properly attired, as well. But I doubt that will happen, because some people are always so sure they are right, they are unable to even consider a different and perhaps just as valid possibility.