I’m a lawyer and while I have friends who work for big firms that still have a “all male associates will wear a suit with a jacket any time they are anywhere a client might see them”, the dress code for the rest of us has been easing up even in law. Even when I’m in the office, I’m far more likely to be in khakis and a casual button-up shirt (often worn untucked) then a suit.
And of course, with covid, I’ve only actually been in the office three times in the last three months and every time I was the only person there. So it’s been jeans and a t-shirt pretty much full time.
So I guess my point is, if Brooks Brothers was counting on the lawyers to save them, that was not a good long-term strategy.