I'm not sure where you find issues with longer hair, but I think most folks here are not that judgmental. If what I previously wrote came across that way, I do apologize. It certainly wasn't my intent. I am one who grows a beard each winter since retiring from the military and find some like it, some are not thrilled, but most simply let me my own preference.Formal and long hair are mutually exclusive of each other.
I’ve also found that men with very short hair are extremely intolerant of men with long hair. It can even be seen in this thread.
Buns have no gender. You either have a bun or you don’t. It makes no difference what the gender of the wearer is.
Here’s what it comes down to: How does it make YOU feel?
The shorter your hair, the narrower your options. The longer your hair, the more options you have for length, style, products, etc.
When it’s all said and done, when you look in the mirror do you feel confident in your look? That’s all that matters.