I think that we are at a "generational inflection point".
I did the whole "it's cool to wear t-shirts to work" startup thing, and now that I'm a little older and the stakes are a bit higher in the office, It does feel a bit disrespectful to look "unserious".
So it's probably a perennial moment: ppl getting older. Maybe I'm boring now.
(Also, died at loss in your footer, and the MD timeline of discovery is cool -- submit it here!)