You're in tech. I'm a lawyer. What is considered appropriate is quite different (although among firms and companies in the legal industry people can dress very differently as well).
But beyond that, I have a fundamental disagreement with your take on fashion. They're both opinions. But I consider what I wear and note what others are wearing. And I reject the notion that it's never appropriate to be dressy. What's popular (puffer vests) is often not cool. Zuckerberg used to wear hoodies. I don't care he's rich. He was a bad dresser. Now he gets fashion advice from a stylist and he looks better.
Also, everything is a vestige of something. We could all walk around wearing t-shirts. What do collars do, after all? Why laces on shoes? Let's wear Allbirds. There's nothing wrong with tradition. I think it's cool that people wear tuxedos to special events. It's a connection to the past.
And if we're talking about what looks good, I'll put on a well tailored suit and an Hermes tie and put myself against someone wearing a colored shirt, khakis, and loud socks, and we'll see who looks better.
Also, linen is your friend during the summer! I have some very comfortable linen suits. Cotton also.
Pre-COVID, I wore suits 4x a week. Now, it's only when I have have to appear before a judge or I'm taking/defending a deposition--or on rare occasions with new or prospective clients. I certainly don't miss having to wear a suit all the time, but I don't mind when I do.
100% my personal views.