This is a super weird take. Lemmy is full of diverse communities and instances. Our instance, for example, has a really high percentage of users with ADHD, ASD and other neurodivergences. We also have a ton of LGBTQI+ folks. So all I'm saying is don't be too quick to paint Lemmy users with a broad brush.
If Lemmy and bro culture are synonymous, then Lemmy has to be fixed.
Lemmy isn't about creating a monoculture with a fixed set of values. It's about having diverse communities and instances with their own sets of values and rules. That's the beauty of Lemmy and the fediverse. Demanding that we adopt and police some universal "politeness" code across every instance that prohibits the use of the word "bro" simply because that's what you want is really quite a bizarre notion. It shows a fundamental misunderstanding of how Lemmy and the fediverse operates. So no, it doesn't need to be fixed. It is working as intended. Diversity is a big strength of the fediverse. We actively don't want such things in place, because that's what happened at places like Reddit, owned by big corpos who suddenly decided they wanted everything advertiser friendly for their IPO.
If you want to be lord and master of your own corner of the internet, nobody is stopping you. But c'mon... all this judgmental language against whole communities of people simply because some folks dared to disagree with your opinion on this topic? It seems like the only thing you have done in this post is make yourself seem even more unreasonable about the topic. None of your responses show a trace of self-reflection, or acceptance of the different perspectives that were shared with you, which is kinda disappointing. If you adopt the position that you are always right and everyone who criticizes you is wrong, then what does that make you? You should do some self crit.