There's a big difference between confidence and arrogance. I prefer to be highly confident in myself and my abilities and humble in my demeanor than to walk around arrogant and flashy, but to each his own.
There are too many folks around nowadays that ain't doing too well and there's gonna be even more coming soon, you gotta read the room. That flashy arrogant shyt can put a target on your back in the worst kind of way. Especially for successful black men because between friends family and folks we went to school with or group up with, we all tend to just be a couple degrees of separation away from some street shyt, if that. No need to give folks that are hungry or jealous someone to fixate on.
And I'll say one last thing, ultra-wealthy folks tend to be super lowkey. I know a girl through a friend who's family has big money and she's super low key. She only has like a hundred and something friends on Instagram, page is private. Very pretty girl, in shape, no thot rocket pictures and attention whoring on her page. Random former NBA players pop up in her comments. Married, has a kid, husband is connected, they have a multi-million dollar home, and they live their lowkey wealthy life out of the public eye. New money and people seeking ego validation tend to be the flashy and arrogant types, no disrespect.
To each his own though, as long as you're enjoying your life and not hurting anybody then do whatever the fukk you feel like doing.