I think you are like me, and just don’t fuss about these things too much.
When I turn up in the restaurant in the evening, I tend not to be preoccupied with checking out other people’s clothes as much as greeting those at neighbouring tables. However, I do sometimes notice. Recently, turning up after most diners, on Black and White Gala Night on QA, I just thought how splendid everyone looked. However, what I tend not to notice is the tiny percentage of people who may be flouting the dress code, unless they are blatant and actually cross my path. Thereafter, after wondering, if, perhaps, they are illiterate, I tend to put them out of my mind. I certainly don’t give much further thought to them or let it spoil my evening. For others such a sight seems second in unpleasantness only to a large iceberg off the starboard bow.